✨ Build rust image with full toolchain, workflow, and utilities ✨

Install latest stable Rust at build time via rustup-init with SHA256
verification. Add 30 cross-compile targets, cargo-binstall, and a
comprehensive set of cargo development tools. Match the official
rust:alpine env-var convention (RUSTUP_HOME / CARGO_HOME) and declare
those paths as Docker VOLUMEs. Add the Go-image pattern: rust-workflow
runs automatically when the container is invoked with no args, while
explicit commands pass through unchanged. Copy language-agnostic
healthcheck, copy, and symlink utilities from the Go image.
- Dockerfile: WORKDIR /app in final stage; add RUSTUP_HOME, CARGO_HOME,
RUSTUP_TOOLCHAIN ENV vars; extend VOLUME to include cargo and rustup paths
- rootfs/root/docker/setup/05-custom.sh: full Rust toolchain install —
build deps (build-base musl-dev clang lld cmake openssl-dev), SHA256-
verified rustup-init, stable toolchain with rust-src/rust-analyzer/
llvm-tools-preview, 30 cross-compile targets, cargo-binstall bootstrap,
cargo tool suite via binstall, cross-linker config.toml, /usr/local/bin
symlinks, ~/.cargo and ~/.rustup home symlinks, /etc/profile.d/rust.sh
- rootfs/usr/local/bin/rust-workflow: default workflow script —
fmt --check → clippy -D warnings → test --all → build --release;
honours CARGO_WORKDIR and CARGO_BUILD_TARGET env vars
- rootfs/usr/local/bin/entrypoint.sh: __no_exit guarded by $# -eq 0 in
START_SERVICES block; * catch-all now calls rust-workflow on no args
- rootfs/usr/local/bin/healthcheck: copied from Go image (HTTP/TCP/
process/file health probe)
- rootfs/usr/local/bin/copy: copied from Go image (recursive copy utility)
- rootfs/usr/local/bin/symlink: copied from Go image (symlink utility)

Dockerfile
rootfs/root/docker/setup/05-custom.sh
rootfs/usr/local/bin/copy
rootfs/usr/local/bin/entrypoint.sh
rootfs/usr/local/bin/healthcheck
rootfs/usr/local/bin/rust-workflow
rootfs/usr/local/bin/symlink

Dockerfile

@@ -207,7 +207,7 @@ ARG LICENSE="WTFPL"
 ARG ENV_PORTS="${EXPOSE_PORTS}"
 
 USER ${USER}
-WORKDIR /root
+WORKDIR /app
 
 LABEL maintainer="CasjaysDev <docker-admin@casjaysdev.pro>"
 LABEL org.opencontainers.image.vendor="CasjaysDev"
@@ -245,10 +245,13 @@ ENV NODE_MANAGER="${NODE_MANAGER}"
 ENV PHP_VERSION="${PHP_VERSION}"
 ENV DISTRO_VERSION="${IMAGE_VERSION}"
 ENV WWW_ROOT_DIR="${WWW_ROOT_DIR}"
+ENV RUSTUP_HOME="/usr/local/share/rustup"
+ENV CARGO_HOME="/usr/local/share/cargo"
+ENV RUSTUP_TOOLCHAIN="stable"
 
 COPY --from=build /. /
 
-VOLUME [ "/config","/data" ]
+VOLUME [ "/config","/data","/usr/local/share/cargo","/usr/local/share/rustup" ]
 
 EXPOSE ${SERVICE_PORT} ${ENV_PORTS}