build_nix.yml

name: "Build Nix package on NixOS"

on:
  push:

jobs:
  nix-build:
    runs-on:
      labels: [nixos, X64]
    env:
      REGISTRY: ghcr.io
      IMAGE_NAME: ${{ github.repository }}
    steps:
    - uses: actions/checkout@v4
    - name: Building package
      run: nix build '.#main'
    - name: Build docker image
      run: |
        nix build '.#docker'
        ls -lah $(readlink ./result)
        docker load -i ./result
    - name: Login to Container registry
      uses: docker/login-action@v3
      with:
        registry: ${{ env.REGISTRY }}
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
    - name: Generate docker image tag
      id: meta
      uses: docker/metadata-action@v5
      with:
        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
    - name: Retag and push
      if: github.repository == 'nextdotid/relation_server'
      run: |
        docker tag nextdotid/relation_server:latest ${DOCKER_METADATA_OUTPUT_TAGS}
        docker push ${DOCKER_METADATA_OUTPUT_TAGS}