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nix-installer-action/docker-shim/Dockerfile

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Support GitHub Enterprise Server using ARC (#59) * Test nix-installer-action on Namespace.so It is special in that it doesn't have systemd, and it'd be great to support Namespace.so. It is also a good test case for a variety of self-hosted GHA runner use cases. * Make correlation more confident * Borrow docker as a process supervisor on Linux GHA runners without systemd This change introduces a Docker container shim which spawns the Nix daemon after bind mounting all the relevant paths into the container. The image is actually completely empty, other than metadata about what to run. This is a cheap and cheerful way to get decent process supervision in environments that don't bring systemd, but do have docker ... which is most everywhere in the GHA ecosystem. * Ignore generated files * Run on arm64 why not * Load a pre-built image, don't build * Check the userInfo.username instead of an env var * Stop double-printing output to the console * can't rm and restart * what * Clean up the container at the end * Emit the fetch line in the 'installing nix' section * tweak output * delete what
2023-12-04 20:17:47 +01:00
# Determinate Nix Installer: Docker Shim
#
# This empty image exists to lean on Docker as a process supervisor when
# systemd isn't available. Specifically intended for self-hosted GitHub
# Actions runners using Docker-in-Docker.
#
# See: https://github.com/DeterminateSystems/nix-installer-action
FROM scratch
ENTRYPOINT [ "/nix/var/nix/profiles/default/bin/nix-daemon"]
CMD []
HEALTHCHECK \
--interval=5m \
--timeout=3s \
CMD ["/nix/var/nix/profiles/default/bin/nix", "store", "ping", "--store", "daemon"]
COPY ./Dockerfile /README.md
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