name: Build and publish Docker image

on:
  push:
    branches:
      - main
  workflow_dispatch:

permissions:
  contents: read
  packages: write

jobs:
  build-and-publish:
    runs-on: ubuntu-latest
    steps:
      - name: Check out source
        uses: actions/checkout@v4

      - name: Log in to Gitea Container Registry
        env:
          REGISTRY_USERNAME: ${{ gitea.actor }}
          REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}
        run: |
          printf '%s' "$REGISTRY_TOKEN" |
            docker login git.anchorhost.eu --username "$REGISTRY_USERNAME" --password-stdin

      - name: Build and tag image
        env:
          COMMIT_SHA: ${{ gitea.sha }}
          DOCKER_IMAGE: git.anchorhost.eu/anchorhost.eu/anchorhost-backend
        run: |
          docker build \
            --label "org.opencontainers.image.revision=$COMMIT_SHA" \
            --tag "$DOCKER_IMAGE:backend" \
            --tag "$DOCKER_IMAGE:main-${COMMIT_SHA:0:12}" \
            .

      - name: Push image
        env:
          COMMIT_SHA: ${{ gitea.sha }}
          DOCKER_IMAGE: git.anchorhost.eu/anchorhost.eu/anchorhost-backend
        run: |
          docker push "$DOCKER_IMAGE:backend"
          docker push "$DOCKER_IMAGE:main-${COMMIT_SHA:0:12}"

      - name: Log out from Gitea Container Registry
        if: always()
        run: docker logout