release-ghcr.yml

name: Push Image to ghcr.io

on:
  release:
    types:
      - published
  push:
    tags:
      - '**'
  workflow_dispatch: {}

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/
            experimental-features = nix-command flakes fetch-closure
            allow-import-from-derivation = true
            accept-flake-config = true
          nix_path: nixpkgs=channel:nixos-unstable
          # cardano-parts requires nix >= 2.17.0; We can remove this after the next release
          # to install-nix-action (v23)
          install_url: https://releases.nixos.org/nix/nix-2.17.0/install

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

      - 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: Set environment variables
        run: |
          # Downcase the package repository, because docker reference
          # are required to be lower case
          REPO_OWNER="$(echo ${{ github.repository_owner }} | tr '[:upper:]' '[:lower:]')"
          IMAGE_TAG="$(echo $GITHUB_REF_NAME | tr '/' '_')"

          echo "REPO_OWNER=${REPO_OWNER}" >> "$GITHUB_ENV"
          echo "IMAGE_TAG=${IMAGE_TAG}" >> "$GITHUB_ENV"

      - name: Upload ${{ github.actor }}/cardano-db-sync
        run: |
          # Download the image from the nix binary cachhe
          nix build --builders "" --max-jobs 0 .#cardano-db-sync-docker

          # Push the image
          skopeo copy \
            docker-archive:./result \
            docker://ghcr.io/${REPO_OWNER}/cardano-db-sync:$IMAGE_TAG

          # If it's a tag build, also tag it as latest
          if [[ "$GITHUB_REF_TYPE" = "tag" ]]; then
            skopeo copy \
              docker-archive:./result \
              docker://ghcr.io/${REPO_OWNER}/cardano-db-sync:latest
          fi

      - name: Upload ${{ github.actor }}/cardano-smash-server
        run: |
          # Download the image from the nix binary cachhe
          nix build --builders "" --max-jobs 0 .#cardano-smash-server-docker

          # Push the image
          skopeo copy \
            docker-archive:./result \
            docker://ghcr.io/${REPO_OWNER}/cardano-smash-server:$IMAGE_TAG

          # If it's a tag build, also tag it as latest
          if [[ "$GITHUB_REF_TYPE" = "tag" ]]; then
            skopeo copy \
              docker-archive:./result \
              docker://ghcr.io/${REPO_OWNER}/cardano-smash-server:latest
          fi