technofab/nix-gitlab-ci
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Technofab 2023-05-29 13:52:53 +02:00
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Dockerfile Normal file
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ARG NIX_TAG="latest"
FROM nixos/nix:$NIX_TAG
COPY entrypoint.sh /usr/local/bin/
ENTRYPOINT ["/bin/sh", "/usr/local/bin/entrypoint.sh"]

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README.md Normal file
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# Gitlab Nix Docker Image
Image: [`technofab/nix-gitlab-ci:latest`](https://hub.docker.com/repository/docker/technofab/nix-gitlab-ci/general)
This simple image tries to start a Nix devShell from a flake.nix in the repository.
It uses the devShell named `ci` (optionally just link to the default shell, see below).
```nix
...
rec {
default = devenv.lib.mkShell {};
ci = default;
};
...
```

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entrypoint.sh Normal file
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#!/bin/sh
set -e
cd "$CI_PROJECT_DIR"
echo "Trying to activate flake's CI shell..."
{
nix --extra-experimental-features "flakes nix-command" develop .#ci --impure --command "bash" >/dev/null
} || {
echo "nix develop failed, falling back to normal shell..."
eval "bash"
}