From d0bdf66b4026364a32d85290d29290a244157282 Mon Sep 17 00:00:00 2001 From: casjay Date: Thu, 3 Sep 2026 01:42:35 -0400 Subject: [PATCH] =?UTF-8?q?=F0=9F=93=9D=20Update=20project=20spec=20and=20?= =?UTF-8?q?documentation=20=F0=9F=93=9D?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit - AI.md --- AI.md | 829 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 829 insertions(+) create mode 100644 AI.md diff --git a/AI.md b/AI.md new file mode 100644 index 0000000..a8bab1c --- /dev/null +++ b/AI.md @@ -0,0 +1,829 @@ +# CasjaysDev Docker Application Image Specification (casjaysdevdocker) + +**Name**: {name} + +**About this file:** This is the complete, authoritative specification for a CasjaysDev +Docker **application image** repository (`casjaysdevdocker/{name}`). It is a master +template — copied into an app image repo as that repo's `AI.md`. It is **permanent** — +never delete it from a repo that carries it. + +**Note:** `{name}` in this file is a reference token, not setup-time replacement text. Its +value is always the repo directory basename (`basename "$PWD"`). + +**Maintenance procedure:** The bootstrap/update runbook (regenerating files after upstream +template changes, creating new repos) is NOT in this file — it lives in the +`dockersrc-bootstrap` agent (it handles both repo families via `REPO_TYPE` detection). +This file defines the standards that procedure enforces. + +--- + +# PART INDEX + +| PART | Title | +|------|-------| +| 0 | Critical rules | +| 1 | Repository model & structure | +| 2 | Template system reference | +| 3 | Tooling — gen-dockerfile & gen-script | +| 4 | `.env.scripts` reference | +| 5 | Runtime system — setup scripts, entrypoint, init.d | +| 6 | README.md standard layout | +| 7 | CI/CD workflows | +| 8 | Verification & commit | +| 9 | Examples from real repos | + +--- + +# PART 0: CRITICAL RULES + +## Org mapping + +| System | Org | Example | +|--------|-----|---------| +| GitHub (source) | `casjaysdevdocker` | `https://github.com/casjaysdevdocker/{name}` | +| Docker Hub (push) | `casjaysdevdocker` | `casjaysdevdocker/{name}` | + +`casjaysdevdocker` repos are **applications** (gitea, opengist, super-productivity, +ampache, aria2, …). They always build FROM the pre-built, multi-arch `casjaysdev/*` base +images — never directly from upstream distro images. The bases themselves live in the +separate `dockersrc` org (GitHub `dockersrc/{base}` → Docker Hub `casjaysdev/{base}`) — +see the base specification (`DOCKERSRC.md`). + +## Non-negotiable rules + +1. **`AI.md` is permanent** — never delete it from the repo. +2. **Generated files are owned by the template system** — never hand-tune content that + `gen-dockerfile` regenerates (see PART 1 ownership table); fix the upstream + `gen-dockerfile` template instead, then regenerate. +3. **Hand-crafted files are owned by the repo** — `gen-dockerfile` must never overwrite + app-specific init.d scripts, custom bin scripts, a `05-custom.sh` with real content, or + a hand-crafted README (PART 6). +4. **Removed OCI labels stay removed** (PART 2) — never re-add `base.name`, + `schema-version`, or duplicate `authors`/`source` entries. +5. **`image.url` is a browsable page** — `https://hub.docker.com/r/casjaysdevdocker/{name}`. + `docker.io` is only a registry pull host; it is never a label URL. +6. **`image.source` and `image.documentation` are the GitHub repo** — + `https://github.com/casjaysdevdocker/{name}`. +7. **One Dockerfile, one file set** — app repos build one image (`latest` + date tag); + version variants (`Dockerfile.{ver}`) belong to base repos only. +8. **Always `FROM casjaysdev/`** — never pull an upstream distro image directly; + the base repos exist so every app shares one patched, multi-arch foundation. +9. **Only `root/`, `tmp/`, and `usr/` may exist at `rootfs/` top level** (PART 1). +10. **Maintenance runs through the `dockersrc-bootstrap` agent** — do not improvise the + update procedure from memory. + +--- + +# PART 1: REPOSITORY MODEL & STRUCTURE + +## What an app image repo is + +A `casjaysdevdocker/{name}` repo containerizes one application on top of a +`casjaysdev/*` base. It publishes a single image (`casjaysdevdocker/{name}:latest` plus a +date tag) — no per-version Dockerfile variants. The application itself is installed in +`05-custom.sh` and started by one or more init.d service scripts. + +## Standard tree + +``` +{name}/ +├── AI.md # This specification (permanent) +├── Dockerfile # [generated] single build file +├── .dockerignore # [generated] +├── .env.scripts # [generated] build config +├── .gitattributes # [generated] +├── .gitea/workflows/ +│ └── build.yml # [generated] gen-dockerfile actions +├── .gitignore # [generated] +├── LICENSE.md # License (WTFPL / app's own license) +├── README.md # [generated*] standard layout (PART 6) +└── rootfs/ # Container filesystem overlay + ├── root/docker/setup/ # [generated*] build-time setup scripts 00–07 + ├── tmp/ # staged files installed at build time (optional) + └── usr/local/ + ├── bin/ # [generated*] entrypoint.sh, pkmgr, symlink, copy, + │ # healthcheck + [hand-crafted] app-specific scripts + └── etc/docker/ + ├── env/ # [hand-crafted] build/runtime env fragments (optional) + ├── functions/ + │ └── entrypoint.sh # [generated] entrypoint function library + └── init.d/ # [hand-crafted] runtime init scripts (one per service) +``` + +`[generated]` — safe to regenerate; local edits will be lost. +`[generated*]` — regenerated from the template, EXCEPT files carrying repo-specific +content (`05-custom.sh` with a real body, extra bin scripts, a hand-crafted README) — +those follow the hand-crafted rules in PARTs 5 and 6. +`[hand-crafted]` — never overwritten by the template system. + +App repos may additionally carry project files (`IDEA.md`, `CLAUDE.md`, `TODO.AI.md`) +per the global project conventions — they are repo-owned and never touched by tooling. + +## rootfs top-level policy + +The only valid directories at the `rootfs/` root are `root/`, `tmp/`, and `usr/`. +Anything else is a leftover from old patterns. Migration map: + +| Old rootfs path | Correct rootfs path | +|-----------------|---------------------| +| `rootfs/etc/{path}` | `rootfs/tmp/etc/{path}` | +| `rootfs/config/{path}` | `rootfs/tmp/etc/{path}` | +| `rootfs/data/{path}` | `rootfs/tmp/var/{path}` | +| `rootfs/var/{path}` | `rootfs/tmp/var/{path}` | +| `rootfs/opt/{path}` | `rootfs/tmp/opt/{path}` | +| `rootfs/share/{path}` | `rootfs/usr/local/share/{path}` | + +`rootfs/usr/local/share/template-files/` is retired — the `DEFAULT_TEMPLATE_DIR`, +`DEFAULT_FILE_DIR`, `DEFAULT_DATA_DIR`, and `DEFAULT_CONF_DIR` variables were removed +from the template system; the entrypoint installs staged files from `rootfs/tmp/etc/` +at container start instead. + +## Repo type detection + +A repo is an **app** repo when no `Dockerfile.*` variant files exist: + +```bash +if find . -maxdepth 1 -name 'Dockerfile.*' -type f | grep -q -- .; then + REPO_TYPE="base" +else + REPO_TYPE="app" +fi +``` + +--- + +# PART 2: TEMPLATE SYSTEM REFERENCE + +Templates ship with `gen-dockerfile`, installed at +`/usr/local/share/CasjaysDev/scripts/templates/dockerfiles/` +(`$CASJAYSDEVDIR/templates/dockerfiles/` in a dev checkout). To inspect what the current +templates produce, generate a fresh reference tree in a temp dir: + +```bash +gen-dockerfile /tmp/gen-dockerfile/{org}/{repo} {distro} +``` + +See `gen-dockerfile --help` for supported distros/types. Keep this PART in sync whenever +the templates change. + +## Template inventory + +The template name selects the base OS family; for an app repo the resulting pull URL is +always the matching `casjaysdev/*` image: + +| Template | Final stage | Init / PID 1 | App pulls FROM | +|----------|-------------|--------------|----------------| +| `alpine.template` | `scratch.template` | tini | `casjaysdev/alpine` | +| `debian.template` | `scratch.template` | tini | `casjaysdev/debian` | +| `ubuntu.template` | `scratch.template` | tini | `casjaysdev/ubuntu` | +| `rhel.template` | `scratch.template` | tini | `casjaysdev/almalinux` | +| `archlinux.template` | `scratch.template` | tini | `casjaysdev/archlinux` (multi-arch manifest) | +| `web.template` | `systemd.template` | `/sbin/init` | `casjaysdev/web` | +| `xorg.template` | `systemd.template` | `/sbin/init` | `casjaysdev/xorg` | + +Default template for app repos is `alpine` unless the application needs systemd, a GUI +stack, or a distro-specific package. + +## Final-stage templates + +`scratch.template` — all non-GUI templates. +- `ENTRYPOINT [ "tini", "-p", "SIGTERM","--", "/usr/local/bin/entrypoint.sh" ]` +- `STOPSIGNAL SIGRTMIN+3` + +`systemd.template` — `web` and `xorg` (systemd is PID 1; tini is redundant). +- `ENTRYPOINT [ "/sbin/init" ]` +- `STOPSIGNAL SIGRTMIN+3` +- No `tini_provider` stage, no `COPY --from=tini_provider` line. + +Both are identical apart from `ENTRYPOINT`. OCI labels, `ENV HOSTNAME`, and +`VOLUME`/`EXPOSE`/`HEALTHCHECK` are the same in both. + +## OCI label standard + +Both final-stage templates emit these labels (no others): + +``` +LABEL maintainer="${GEN_DOCKERFILE_MAINTAINER}" +LABEL org.opencontainers.image.vendor="${GEN_DOCKERFILE_VENDOR:-CasjaysDev}" +LABEL org.opencontainers.image.authors="${GEN_DOCKERFILE_AUTHOR:-CasjaysDev}" +LABEL org.opencontainers.image.licenses="${LICENSE}" +LABEL org.opencontainers.image.title="${IMAGE_NAME}" +LABEL org.opencontainers.image.description="Containerized version of ${IMAGE_NAME}" +LABEL org.opencontainers.image.created="${BUILD_DATE}" +LABEL org.opencontainers.image.version="${BUILD_VERSION}" +LABEL org.opencontainers.image.revision="${GIT_COMMIT}" +LABEL org.opencontainers.image.url="${GEN_DOCKERFILE_HUB_REPO}" +LABEL org.opencontainers.image.source="${GEN_DOCKERFILE_GIT_REPO}" +LABEL org.opencontainers.image.documentation="${GEN_DOCKERFILE_GIT_REPO}" +LABEL org.opencontainers.image.vcs-type="Git" +LABEL com.github.containers.toolbox="false" +``` + +Shell-expanded values (no `\`) are evaluated at template-render time by `gen-dockerfile`. +Dollar-escaped values (`\${...}`) become literal Docker `ARG`/`ENV` references in the +generated `Dockerfile`. + +Resolved values for a `casjaysdevdocker` repo pushing to Docker Hub: + +| Label | Value | +|-------|-------| +| `url` | `https://hub.docker.com/r/casjaysdevdocker/{name}` — browsable Hub page; `gen-dockerfile` derives it from the registry host (`docker.io` → `hub.docker.com/r/`) | +| `source` | `https://github.com/casjaysdevdocker/{name}` | +| `documentation` | `https://github.com/casjaysdevdocker/{name}` | + +Older app repos may still carry `url="https://docker.io/casjaysdevdocker/{name}"` — that +is the stale form; regeneration corrects it. Removed labels (never re-add): +- `org.opencontainers.image.base.name` — belongs on the base image, not this image +- `org.opencontainers.image.schema-version` — non-spec; redundant with `version` +- Any duplicate `authors` or `source` entries + +## HOSTNAME convention + +All templates set `ENV HOSTNAME="casjaysdevdocker-${IMAGE_NAME}"` in every stage that +declares it. The prefix is always `casjaysdevdocker-`, never `casjaysdev-`. + +## `GEN_DOCKERFILE_APP_DIR` and pull URL logic + +`GEN_DOCKERFILE_APP_DIR` is auto-detected by `gen-dockerfile` from the parent directory +of `$PWD` (the org the checkout lives in): + +```bash +GEN_DOCKERFILE_APP_DIR="${GEN_DOCKERFILE_APP_DIR:-$(basename -- "$(dirname -- "$PWD")")}" +``` + +It selects the `GEN_DOCKER_SPECIFY_IMAGE_SOURCE_*` defaults: + +- `casjaysdevdocker/*` repos → `FROM casjaysdev/:latest` (pre-built, multi-arch) +- `dockersrc/*` and all other orgs → `FROM :latest` (upstream official images) + +App repos must resolve to the `casjaysdev/*` branch — a checkout outside +`~/Projects/*/casjaysdevdocker/` needs `GEN_DOCKERFILE_APP_DIR="casjaysdevdocker"` +exported before calling `gen-dockerfile`, or the regenerated Dockerfile silently reverts +to upstream distro pulls (rule 8 violation). + +## Arch Linux apps + +`casjaysdev/archlinux` is a multi-arch manifest (`linux/amd64` + `linux/arm64`), so app +repos use a single `FROM ${PULL_URL}:${DISTRO_VERSION} AS build` — the three-stage +`base-${TARGETARCH}` FROM block belongs to the base repo only. + +## `web.template` / `xorg.template` notes + +`web` apps inherit the systemd + noVNC stack (`SERVICE_PORT="5800"`, +`EXPOSE_PORTS="5800 5900"` defaults); `xorg` apps inherit the systemd + Xorg stack. App +packages go in `ENV_PACKAGES` / `02-packages.sh`, never by editing the template's stack +list. + +## `debian.template` / `ubuntu.template` — RUN continuation + +The first `RUN` block must have `; \` after the `echo` line so +`export DEBIAN_FRONTEND=noninteractive` executes before `apt-get`: + +```dockerfile +RUN set -e; \ + echo "Updating the system"; \ + export DEBIAN_FRONTEND=noninteractive; \ + apt-get update && apt-get upgrade -yy && apt-get dist-upgrade -yy +``` + +Without the `; \` the export is a no-op and `apt-get` may prompt interactively. + +## Template resolution order + +1. `$GEN_DOCKERFILE_CONFIG_DIR/templates/.template` (user override) +2. `/usr/local/share/CasjaysDev/scripts/templates/dockerfiles/.template` + (installed; `$CASJAYSDEVDIR/templates/dockerfiles/` in a dev checkout) + +`template_options.source` is sourced after `__set_variables`, allowing template-specific +variable overrides. + +--- + +# PART 3: TOOLING — gen-dockerfile & gen-script + +## `gen-dockerfile` + +``` +Usage: gen-dockerfile [options] [dir] [template] [repo-name] [git-repo-url] +``` + +| Flag | Meaning | +|------|---------| +| `--update` | Rewrite `.env.scripts` (add/drop vars against the current template) and update ARG/LABEL lines in the `Dockerfile`. Touches no other file. | +| `--nogit` | Do not init or commit a git repo — required inside an existing repo. | +| `--dir PATH` | Operate on / write output to PATH instead of `$PWD`. | +| `--template NAME` | Template to use (`alpine`, `debian`, `ubuntu`, `rhel`, `archlinux`, `scratch`, `web`, `xorg`). Defaults to `alpine`. | +| `--repo NAME` | Registry repo name (image basename). Defaults to the directory name. | +| `--org NAME` | Registry owner / GitHub org (`--user` is an alias). Prefix `git:` or `reg:` to scope to one system; bare value sets both. For app repos both are `casjaysdevdocker`. | +| `--registry URL` | Registry provider URL (e.g. `https://docker.io`). | +| `--tag VERSION` | Image version tag (default `latest`). | +| `--add-tags TAGS` | Comma-separated additional tags (`USE_DATE` = auto date tag). | +| `--distro-name IMG` | Base image pull URL (overrides `ENV_PULL_URL`). | +| `--distro-version T` | Base image tag (overrides `ENV_DISTRO_TAG`). | +| `--startup FILE` | Generate an init.d service script at `rootfs/usr/local/etc/docker/init.d/FILE` via `gen-script other/start-service`. | +| `--dockerfile` | Regenerate the Dockerfile only. | +| `--force` | Overwrite existing files without prompting. | + +Resolution order when a value is not given by a flag: flags → git remote → project dirs → +defaults. + +Special subcommand — `gen-dockerfile actions` writes `.gitea/workflows/build.yml` from +the existing `Dockerfile` (PART 7). App repos have no versioned `build.{ver}.yml` files. + +## `gen-script` + +``` +Usage: gen-script [options] [template] [filename] +``` + +| Flag / env var | Meaning | +|----------------|---------| +| `--dir PATH` | Write the generated file to `PATH/filename`. | +| `-n` / `--name VALUE` | Service name substituted into the template — fills `REPLACE_SERVICE_NAME` in `other/start-service`, pre-populating `SERVICE_NAME=` without a sed step. | +| `GEN_SCRIPT_OVERWRITE="Y"` | Overwrite the output without prompting (default `"A"` = ask). Required when the target exists, even with `GEN_SCRIPT_EDITFILE="N"`. | +| `GEN_SCRIPT_EDITFILE="N"` | Suppress the interactive editor after generation. `-e`/`--no` sets BOTH this AND `GEN_SCRIPT_OVERWRITE="Y"`; the env var alone does not. | +| `other/start-service` | Template path — positional arg 1, slash-joined words, matching the `@@Template` header. | +| `filename` | Output basename — positional arg 2, combined with `--dir`. | + +Other flags: `-k`/`--keep` (never overwrite), `--replace` (new header replaces old), +`-d`/`--desc` (header description), `-p`/`--prev` (copy header metadata from a file). + +--- + +# PART 4: `.env.scripts` REFERENCE + +Generated at the repo root; sourced by `gen-dockerfile` and by CI at build time. App +repos carry exactly one. It is a pure `KEY="value"` file — no logic. + +## Variables + +| Variable | Purpose | +|----------|---------| +| `ENV_DOCKERFILE` | Dockerfile to build (`Dockerfile`) | +| `ENV_REGISTRY_REPO` | Image name in the registry (`{name}`) | +| `ENV_REGISTRY_ORG` | Registry namespace — `casjaysdevdocker` for app repos | +| `ENV_REGISTRY_URL` | Registry base URL (`https://docker.io`) — pull/push host, never a label URL | +| `ENV_REGISTRY_PUSH` | Full push path `org/repo` (`casjaysdevdocker/{name}`) | +| `ENV_ADD_IMAGE_PUSH` | Extra push destinations | +| `ENV_GIT_REPO_URL` | Full Git repo URL — `https://github.com/casjaysdevdocker/{name}`; feeds the `source`/`documentation` labels, so a wrong value here regresses labels on regeneration | +| `ENV_USE_TEMPLATE` | Template name (`alpine`, `debian`, …) — the authoritative record of which base family the app builds on | +| `ENV_PULL_URL` | Base image to pull FROM (`casjaysdev/`) | +| `ENV_DISTRO_TAG` | Tag for the pull image (`latest`) | +| `ENV_IMAGE_TAG` | Default image tag (`latest`) | +| `ENV_ADD_TAGS` | Additional comma-separated tags; `USE_DATE` auto-generates a date tag | +| `ENV_PACKAGES` | Space-separated package list | +| `ENV_VENDOR` / `ENV_AUTHOR` / `ENV_MAINTAINER` | Label metadata | +| `SERVICE_PORT` | Primary exposed port — apps normally set this | +| `EXPOSE_PORTS` | Additional exposed ports | +| `PHP_VERSION` / `NODE_VERSION` / `NODE_MANAGER` | Runtime versions (`system` default) | +| `WWW_ROOT_DIR` | Web root (`/usr/local/share/httpd/default`) | +| `DOCKER_ENTYPOINT_PORTS_WEB` / `DOCKER_ENTYPOINT_PORTS_SRV` | Ports passed to the entrypoint | +| `DOCKER_ENTYPOINT_HEALTH_APPS` / `DOCKER_ENTYPOINT_HEALTH_ENDPOINTS` | Healthcheck targets | + +## Legacy variable auto-migration + +`gen-dockerfile` calls `__migrate_env_script` on every run, renaming old variables: + +| Old name | Current name | +|----------|-------------| +| `ENV_IMAGE_NAME` | `ENV_REGISTRY_REPO` | +| `ENV_IMAGE_PUSH` | `ENV_REGISTRY_PUSH` | +| `ENV_HUB_BASE` | `ENV_REGISTRY_URL` | +| `ENV_ORG_NAME` | `ENV_REGISTRY_ORG` | + +Never use the old names in new files. Retired variables that must not reappear anywhere: +`DEFAULT_TEMPLATE_DIR`, `DEFAULT_FILE_DIR`, `DEFAULT_DATA_DIR`, `DEFAULT_CONF_DIR`. + +--- + +# PART 5: RUNTIME SYSTEM — SETUP SCRIPTS, ENTRYPOINT, INIT.D + +## Build-time setup scripts (`rootfs/root/docker/setup/`) + +Run in order inside the build stage: + +| Script | Role | +|--------|------| +| `00-init.sh` | Initialize base directory structure and environment | +| `01-system.sh` | Repos, locales, timezone, system settings | +| `02-packages.sh` | App-specific packages, package managers, language runtimes | +| `03-files.sh` | Install staged files (`rootfs/tmp/etc/*` → `/etc/*`), permissions, symlinks | +| `04-users.sh` | Create service users/groups | +| `05-custom.sh` | Application install logic — the heart of an app repo | +| `06-post.sh` | Post-install configuration | +| `07-cleanup.sh` | Remove build deps, caches, temp files | + +**`05-custom.sh` ownership:** the upstream template ships an empty stub. An app repo's +`05-custom.sh` carries the application install (download/build, users, default config) — +that content exists only in the repo's git history, never in the template. On +regeneration, keep the existing body and pull forward only boilerplate (version-stamp +header, `set` line, shellcheck-disable line). The same rule applies to any other `0*.sh` +found to contain real logic beyond the stub. + +## Entrypoint flow + +``` +tini → /usr/local/bin/entrypoint.sh +├─ Load /usr/local/etc/docker/functions/entrypoint.sh +├─ Source env: /root/env.sh, /usr/local/etc/docker/env/*.sh, /config/env/*.sh +├─ Seed /config and /data on first run +├─ __start_init_scripts — source every init.d/*.sh in sort order +├─ Handle `healthcheck` command +└─ Execute main application +``` + +`rootfs/usr/local/bin/` generated set: `entrypoint.sh`, `pkmgr`, `symlink`, `copy`, +`healthcheck`. `pkmgr` wraps the native package manager (`apk`, `apt-get`, `dnf`, +`pacman`) behind `pkmgr update|install|remove|clean`. + +## App-specific bin scripts + +Extra scripts in `rootfs/usr/local/bin/` that `gen-dockerfile` does not generate are +repo-owned. Their `@@Template` header governs maintenance: + +- `@@Template : shell/sh` — boilerplate synced from `$TEMPLATE_DIR/scripts/shell/sh`; + `#!/usr/bin/env sh`, `set -e` only (`pipefail` is a bashism — must NOT appear) +- `@@Template : shell/bash` — synced from `shell/bash`; `set -eo pipefail` required +- No `@@Template` header — hand-written; never modified by tooling + +## init.d scripts — critical rules + +**Each service gets its own numbered init.d script. Never merge or remove services.** +`__start_init_scripts` sources every `*.sh` in sort order — multi-process apps have one +script per daemon (e.g. gitea: `05-dockerd.sh`, `08-gitea.sh`, `zz-act_runner.sh`). + +init.d scripts are **regenerated, never patched in place** — old copies may call functions +removed from the current `functions/entrypoint.sh`. Generate fresh via +`gen-script other/start-service` (or `gen-dockerfile --startup`), then restore the +app-specific values. They are `#!/usr/bin/env bash` with `set -eo pipefail`. + +Required variables in every init.d script: + +```bash +SERVICE_NAME="myapp" +EXEC_CMD_BIN='myapp' +EXEC_CMD_ARGS='' +EXEC_PRE_SCRIPT='' +SERVICE_USES_PID='' +IS_WEB_SERVER="no" +IS_DATABASE_SERVICE="no" +USES_DATABASE_SERVICE="no" +DATABASE_SERVICE_TYPE="sqlite" +RUNAS_USER="root" +``` + +Directory variables: + +```bash +DATA_DIR="/data/$SERVICE_NAME" +CONF_DIR="/config/$SERVICE_NAME" +ETC_DIR="/etc/$SERVICE_NAME" +LOG_DIR="/data/logs/$SERVICE_NAME" +TMP_DIR="/tmp/$SERVICE_NAME" +RUN_DIR="/run/$SERVICE_NAME" +ROOT_FILE_PREFIX="/config/secure/auth/root" +USER_FILE_PREFIX="/config/secure/auth/user" +``` + +## Hook functions + +The `start-service` template generates all outer hooks fully implemented — customise via +the matching `*_local()` stub, which each outer hook calls automatically if defined: + +| Outer hook (do not redefine) | Customise via | +|------------------------------|---------------| +| `__run_precopy` | `__run_precopy_local` | +| `__execute_prerun` | `__execute_prerun_local` | +| `__run_pre_execute_checks` | `__run_pre_execute_checks_local` | +| `__update_conf_files` | `__update_conf_files_local` | +| `__pre_execute` | `__pre_execute_local` | +| `__post_execute` | `__post_execute_local` | +| `__pre_message` | `__pre_message_local` | +| `__update_ssl_conf` | `__update_ssl_conf_local` | +| `__create_service_env` | — | +| `__run_start_script` | — | +| `__run_secure_function` | — | + +## PID sentinel guard + +Every init.d script must guard on exactly this sentinel — leading dot, no underscores in +the filename portion; any other form silently skips the guard: + +```bash +if [ ! -f "/run/.start_init_scripts.pid" ]; then + echo "__start_init_scripts function hasn't been Initialized" >&2 + SERVICE_IS_RUNNING="no" + __script_exit 1 +fi +``` + +## Volumes + +- `/config` — persistent configuration +- `/data` — persistent application data + +--- + +# PART 6: README.md STANDARD LAYOUT + +App image layout (`casjaysdevdocker/{name}` → `casjaysdevdocker/{name}`). Substitute +`{name}` and `{port}` (the value of `SERVICE_PORT`); omit all `-p`/`ports:` sections only +in the rare case `SERVICE_PORT` is empty. + +**Hand-crafted README exception:** a repo whose README deliberately diverges from this +layout (full env-var tables, app-specific quick-start flags — e.g. gitea) owns its README. +Update its facts (image name, org, ports, URLs), never rewrite its structure back to the +generated layout. + +````markdown +## 👋 Welcome to {name} 🚀 + +{name} README + + +## Install my system scripts + +```shell + sudo bash -c "$(curl -q -LSsf "https://github.com/systemmgr/installer/raw/main/install.sh")" + sudo systemmgr --config && sudo systemmgr install scripts +``` + +## Automatic install/update + +```shell +dockermgr update {name} +``` + +## Install and run container + +```shell +dockerHome="/srv/$USER/docker/casjaysdevdocker/{name}/latest/volumes" +mkdir -p "$dockerHome" +git clone "https://github.com/dockermgr/{name}" "$HOME/.local/share/CasjaysDev/dockermgr/{name}" +cp -Rfva "$HOME/.local/share/CasjaysDev/dockermgr/{name}/volumes/." "$dockerHome/" +docker run -d \ +--restart always \ +--privileged \ +--name casjaysdevdocker-{name}-latest \ +--hostname {name} \ +-e TZ=${TIMEZONE:-America/New_York} \ +-v "$dockerHome/data:/data:z" \ +-v "$dockerHome/config:/config:z" \ +-p {port}:{port} \ +casjaysdevdocker/{name}:latest +``` + +## via docker-compose + +```yaml +services: + ProjectName: + image: casjaysdevdocker/{name} + container_name: casjaysdevdocker-{name} + environment: + - TZ=America/New_York + - HOSTNAME={name} + volumes: + - "/srv/$USER/docker/casjaysdevdocker/{name}/latest/volumes/data:/data:z" + - "/srv/$USER/docker/casjaysdevdocker/{name}/latest/volumes/config:/config:z" + ports: + - {port}:{port} + restart: always +``` + +## Get source files + +```shell +dockermgr download src casjaysdevdocker/{name} +``` + +OR + +```shell +git clone "https://github.com/casjaysdevdocker/{name}" "$HOME/Projects/github/casjaysdevdocker/{name}" +``` + +## Build container + +```shell +cd "$HOME/Projects/github/casjaysdevdocker/{name}" +buildx +``` + +## Authors + +🤖 casjay: [Github](https://github.com/casjay) 🤖 +⛵ casjaysdevdocker: [Github](https://github.com/casjaysdevdocker) [Docker](https://hub.docker.com/u/casjaysdevdocker) ⛵ +```` + +--- + +# PART 7: CI/CD WORKFLOWS + +## Generated workflow (`gen-dockerfile actions`) + +`gen-dockerfile actions` writes `.gitea/workflows/build.yml` from the current +`Dockerfile`. App repos get the single `build.yml` only — no versioned variants. All +actions are SHA-pinned — never tag-pinned. + +- **Triggers:** `push` to `main`, monthly schedule, `workflow_dispatch` +- **Registry strategy:** always logs in to the Gitea registry via the auto-provided + `GITEA_TOKEN`; conditionally logs in to Docker Hub when `vars.DOCKER_USERNAME` is set + (`vars.DOCKER_USERNAME` + `secrets.DOCKER_PASSWORD`; `vars.DOCKER_REGISTRY` overrides + the registry, `vars.DOCKER_ORG` the namespace) +- **Platforms:** `linux/amd64,linux/arm64` +- **build-args:** only `BUILD_DATE`, `GIT_COMMIT`, `BUILD_VERSION` +- **Tags pushed:** date tag (`yymm`) + `latest` to both registries +- **Annotations:** mirror the OCI label standard (PART 2), with `url`/`source`/ + `documentation` set to the workflow's repository URL + +## Legacy workflow (`docker.yaml`) + +A hand-crafted `.gitea/workflows/docker.yaml` may exist in older repos — reference copy in +the org-level `.github` repo. **Never overwrite it, and never use it as a template for new +work** — it uses tag-pinned actions and retired secret names. All new/updated workflows +come from `gen-dockerfile actions`. + +--- + +# PART 8: VERIFICATION & COMMIT + +## Syntax gates + +Every touched script must pass before commit: + +```bash +for f in rootfs/usr/local/bin/*; do + [ -f "$f" ] || continue + case "$(head -1 "$f")" in + *bash*) bash -n "$f" || exit 1 ;; + *sh*) sh -n "$f" || exit 1 ;; + esac +done + +bash -n rootfs/usr/local/etc/docker/functions/entrypoint.sh + +for f in rootfs/root/docker/setup/0*.sh rootfs/usr/local/etc/docker/init.d/*.sh; do + [ -f "$f" ] || continue + bash -n "$f" || exit 1 +done +``` + +## Dead-reference gates + +After any regeneration: + +1. No script references an env var removed from `.env.scripts` (diff-driven check). +2. No script calls a function absent from both the current + `functions/entrypoint.sh` and the script itself. +3. No `__copy_templates` calls remain (retired with `DEFAULT_TEMPLATE_DIR`). +4. `Dockerfile` still pulls `FROM casjaysdev/*` (rule 8) — an upstream distro pull means + `GEN_DOCKERFILE_APP_DIR` resolved wrong during regeneration. + +## Commit + +```bash +git status --porcelain +git diff --stat +``` + +Write `.git/COMMIT_MESS` from the actual diff — subject ≤64 chars, body as +`- path: change` bullets covering every changed file. Then: + +```bash +gitcommit --dir "$(git rev-parse --show-toplevel)" all +``` + +`git commit` / `git push` directly are forbidden. Never commit with a failing syntax +gate. + +## Project Memory (.claude/memory/) + +Durable, repo-specific knowledge discovered during work on this image — a template +quirk, a base-image gotcha, a decision on why something deviates from the generated +default — belongs in `.claude/memory/`, not only in a commit message or chat. Committed +to the repo, not gitignored. One markdown file per topic, YAML frontmatter (`name`, +`description`, `type: project`), indexed by `.claude/memory/MEMORY.md`, read on demand. +Same credential-masking rule as everywhere else — never store secrets. `~/.claude/**` +(global) stays read-only, deployed only via `claudemgr/config`'s `install.sh`; +`.claude/memory/` here is read/write in this repo directly. + +--- + +# PART 9: EXAMPLES FROM REAL REPOS + +Real excerpts from live `casjaysdevdocker` repos, showing how the conventions look +in practice. Use these as reference patterns — do not copy them verbatim into other +repos; adapt names, paths, and versions. + +## 9.1 — App-install `05-custom.sh` (from `casjaysdevdocker/gitea`) + +App repos always own a non-stub `05-custom.sh` — it is where the application binary +is installed. The gitea repo (100 lines) shows the canonical version-resolution and +download pattern: + +```bash +# Set bash options +set -o pipefail +[ "$DEBUGGER" = "on" ] && echo "Enabling debugging" && set -x$DEBUGGER_OPTIONS +# - - - - - - - - - - - - - - - - - - - - - - - - - +# Set env variables +exitCode=0 +apk add --no-cache ca-certificates 2>/dev/null || true +update-ca-certificates 2>/dev/null || true +GITEA_VERSION="${GITEA_VERSION:-latest}" +GITEA_BIN_FILE="/usr/local/bin/gitea" +ARCH="$(uname -m | tr '[:upper]' '[:lower]')" +case "$ARCH" in x86_64) ARCH="amd64" ;; aarch64) ARCH="arm64" ;; *) echo "$ARCH is not supported by this script" >&2 && exit 1 ;; esac +# Pinned fallback used when gitea.com is unreachable from the build host +ACT_RUNNER_FALLBACK_VERSION="${ACT_RUNNER_FALLBACK_VERSION:-v1.0.8}" +# Fetch latest version tag from the renamed repo — 30s connect timeout +ACT_VERSIONS="$(curl -q --connect-timeout 30 --max-time 45 -LSsf \ + 'https://gitea.com/api/v1/repos/gitea/runner/releases' \ + -H 'accept: application/json' 2>/dev/null | jq -r '.[].tag_name' | sort -Vr | head -n1)" +# Fall back to pinned version if API is unreachable +[ -z "$ACT_VERSIONS" ] && ACT_VERSIONS="$ACT_RUNNER_FALLBACK_VERSION" +if [ -z "$GITEA_VERSION" ] || [ "$GITEA_VERSION" = "latest" ]; then + _latest_url="$(curl -4sfL -o /dev/null -w '%{url_effective}' https://github.com/go-gitea/gitea/releases/latest 2>/dev/null)" + GITEA_VERSION="$(printf '%s\n' "$_latest_url" | grep -oE '[0-9]+\.[0-9]+\.[0-9]+')" +fi +GITEA_URL="https://github.com/go-gitea/gitea/releases/download/v${GITEA_VERSION}/gitea-${GITEA_VERSION}-linux-${ARCH}" +``` + +Patterns to note: + +- Version defaults to `latest` but resolves to a concrete number at build time via + the upstream API, with a pinned fallback for offline/rate-limited builds +- Arch mapping (`x86_64→amd64`, `aarch64→arm64`) with a hard error for anything else +- Bounded curl (`--connect-timeout`/`--max-time`), never open-ended +- Downloads land in `/usr/local/bin`, are chmodded, and verified before exit 0 + +## 9.2 — init.d service script config block (from `casjaysdevdocker/gitea` `08-gitea.sh`) + +One init.d script per service, generated by `gen-script` and then configured by +editing ONLY the variable block — the function bodies below it are template code. +The configured block from `08-gitea.sh`: + +```bash +SERVICE_NAME="gitea" +# set data directory +DATA_DIR="/data/gitea" +# set config directory +CONF_DIR="/config/gitea" +# set the containers etc directory +ETC_DIR="/etc/gitea" +# set the temp dir +TMP_DIR="/tmp/gitea" +# set scripts pid dir +RUN_DIR="/run/gitea" +# set log directory +LOG_DIR="/data/logs/gitea" +# Set the working dir +WORK_DIR="/data/gitea" +# port which service is listening on +SERVICE_PORT="80" +# gitea must run as git user, not root +RUNAS_USER="git" +# execute command as another user +SERVICE_USER="git" +# Set the service group +SERVICE_GROUP="git" +# execute command variables - keep single quotes variables will be expanded later +# command to execute +EXEC_CMD_BIN='gitea' +# command arguments +EXEC_CMD_ARGS='web ' +# command arguments +EXEC_CMD_ARGS+='--port $SERVICE_PORT --config $CONF_DIR/app.ini ' +``` + +Patterns to note: + +- Dir vars all derive from `$SERVICE_NAME` (`/data/{svc}`, `/config/{svc}`, + `/run/{svc}`, `/data/logs/{svc}`) +- `EXEC_CMD_BIN`/`EXEC_CMD_ARGS` stay single-quoted — template code expands them + later, after ports and paths are finalized +- Multi-word args are built up with `EXEC_CMD_ARGS+=`, one concern per line + +## 9.3 — Customizing behavior via `*_local()` hooks (from `08-gitea.sh`) + +Template functions (`__pre_execute`, `__update_conf_files`, …) each end by calling +an optional `*_local()` hook. Repo-specific behavior goes in the hook, never inside +the template function body: + +```bash +# function to run before executing +__pre_execute() { + local exitCode=0 + ... + # allow custom functions + if builtin type -t __pre_execute_local | grep -q 'function'; then __pre_execute_local; fi + return $exitCode +} +``` + +The stubs (`__pre_execute_local() { true; }` etc.) live near the bottom of the +script — replace a stub's body to customize; regeneration then only requires +re-applying the variable block and the non-stub hooks. Multi-service apps ship one +script per service with two-digit ordering (`05-dockerd.sh`, `08-gitea.sh`, +`zz-act_runner.sh` for run-last).