release-ghcr.yml

name: Push Image to ghcr.io

on:
  release:
    types:
      - published
  push:
    tags:
      - '**'

env:
  REGISTRY: ghcr.io

jobs:
  build:
    name: "Upload to ghcr.io"
    runs-on: ubuntu-latest
    steps:
      - name: Install Nix with good defaults
        uses: input-output-hk/install-nix-action@v21
        with:
          extra_nix_config: |
            trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=
            substituters = https://cache.iog.io/ https://cache.nixos.org/
          nix_path: nixpkgs=channel:nixos-unstable

      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Download image from cache
        run:
          nix build --builders "" --max-jobs 0 .#dockerImage -o dockerImage

      - name: Log in to ghcr.io
        uses: docker/login-action@v2.1.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Upload to ghcr.io
        run: |
          docker load < dockerImage
          docker image tag \
            inputoutput/cardano-db-sync:$GITHUB_SHA  \
            ghcr.io/${{ github.repository_owner }}/cardano-db-sync:$GITHUB_REF_NAME
          docker push ghcr.io/${{ github.repository_owner }}/cardano-db-sync:$GITHUB_REF_NAME