jason 17141ceb5b ✨ Add BuildKit cache mounts, sccache, and full tooling suite ✨ ...

Cache strategy: BuildKit --mount=type=cache on apk and cargo/rustup/sccache
directories so docker build never re-downloads packages between runs.
sccache is available as a compilation cache; mount /root/.cache/sccache at
runtime to persist compiled artifacts across container invocations.
Added gdb, a nightly toolchain (miri + rust-src), and a broad set of
linting, formatting, debugging, fuzzing, and analysis tools.
- Dockerfile: add # syntax=docker/dockerfile:1 pragma; add BuildKit cache
mount for /var/cache/apk on the packages RUN step; add cache mounts for
cargo/registry (shared), cargo/git, rustup/downloads, and sccache on the
custom commands RUN step; add SCCACHE_DIR and CARGO_INCREMENTAL ENV vars;
extend VOLUME to include /root/.cache/sccache
- rootfs/root/docker/setup/05-custom.sh: add gdb to system packages;
install nightly toolchain (minimal profile) with miri + rust-src; extend
binstall block with sccache, typos, taplo-cli, cargo-sort, cargo-hack,
cargo-criterion, dprint, cargo-careful, cargo-public-api,
cargo-spellcheck, cargo-geiger, grcov; add fallback cargo installs for
cargo-udeps, cargo-fuzz, cargo-minimal-versions; export SCCACHE_DIR and
CARGO_INCREMENTAL in /etc/profile.d/rust.sh; create /root/.cache/sccache

Dockerfile
rootfs/root/docker/setup/05-custom.sh

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..

root/docker/setup

✨ Add BuildKit cache mounts, sccache, and full tooling suite ✨

2026-05-31 11:43:13 -04:00

usr/local

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

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