67 lines
3.1 KiB
Docker
67 lines
3.1 KiB
Docker
# Custom toolchain image for the self-hosted Gitea Actions (Forgejo) runner.
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#
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# The cluster runs act_runner in *host mode* (docker disabled), so workflow steps
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# execute INSIDE this image. The stock forgejo/runner image is minimal and lacks
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# node (needed by JS actions: actions/checkout, setup-go, ...), git, make, etc.
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# The runner pod is non-root with all caps dropped, so it cannot apt/apk-add at
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# runtime -- the tools must be baked in here.
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#
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# PUBLISHING IS AUTOMATED. Run the "build image" workflow on GitHub with a tag
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# (e.g. 12.11.1-ci4); it builds both architectures and pushes to
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# ghcr.io/zegit-zoo/zegit-forgejo-runner. ./push-image.sh remains for building
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# by hand. README.md explains why the registry moved off Gitea (Cloudflare's
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# request-body cap returns 413 on a registry layer) and why the build cannot run
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# on our own runners (host mode, all capabilities dropped).
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#
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# Then in flux-config set the image on BOTH deployment-zegit-runner and
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# deployment-forgejo-runner, digest-pinned.
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#
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# The image is NOT public. Pulls need a registry credential in
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# forgejo-runner-system -- github-registry-credentials for ghcr.io. An earlier
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# version of this comment claimed the package was public and needed no secret;
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# that was wrong for the Gitea registry too, which is private.
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FROM code.forgejo.org/forgejo/runner:12.11.1
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USER root
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# nodejs -> JS actions runtime (actions/checkout, actions/setup-go, ...)
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# git -> checkout
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# git-daemon -> provides git-http-backend, which Alpine splits OUT of the `git`
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# package (git alone ships git-remote-http/https but NOT the CGI
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# backend). Without it, internal/forgeprobe's smart-HTTP tests died
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# with "fork/exec git-http-backend: no such file or directory" and
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# reported three FAILURES for a missing tool — which turned Gitea CI
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# red on every zegit master commit while GitHub stayed green, for
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# hours, unnoticed.
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# bash -> `shell: bash` steps and many action entrypoints
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# coreutils-> GNU userland (alpine busybox tools trip up some scripts)
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# curl,tar -> setup-go / gitleaks download + extract their own arch-specific binaries
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# make -> zegit Makefile targets
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# ca-certificates -> trusted roots for HTTPS to gitea/github/goproxy
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# gcc,musl-dev -> C toolchain for cgo; `go test -race` (the Makefile test
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# target) requires cgo, which needs a C compiler + libc headers
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# (musl on Alpine)
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# python3,py3-yaml -> the repo's own gates are Python: credentials-coverage.sh,
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# validate-admission.sh and feature-lint.sh all shell out to
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# python3, and credentials-coverage parses manifests with yaml
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#
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# Go is intentionally NOT baked in: actions/setup-go fetches the pinned version
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# per-run (node + tar are present), so the image needs no rebuild on Go bumps.
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RUN apk add --no-cache \
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nodejs \
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git \
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git-daemon \
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bash \
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coreutils \
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curl \
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tar \
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make \
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ca-certificates \
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gcc \
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musl-dev \
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python3 \
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py3-yaml
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# Match the runner pod's runAsUser (1000); keep the image non-root by default.
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USER 1000
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