build_container_image.yml

name: build and publish container

on:
  push:
    branches:
    - main

env:
  DOCKER_HUB_ORGANIZATION: ${{ vars.DOCKER_HUB_ORGANIZATION }}
  DOCKER_HUB_REPOSITORY: opey


jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Extract branch name
        shell: bash
        run: echo "branch=$(echo ${GITHUB_REF#refs/heads/})" >>$GITHUB_OUTPUT
        id: extract_branch
      - uses: actions/checkout@v4
      - uses: actions/upload-artifact@v4
        with:
          name: ${{ github.sha }}
          path: push/

      - name: Build container image with latest tag
        run: |
          docker build .  --tag docker.io/${{ env.DOCKER_HUB_ORGANIZATION }}/${{ env.DOCKER_HUB_REPOSITORY }}:$GITHUB_SHA --tag docker.io/${{ env.DOCKER_HUB_ORGANIZATION }}/${{ env.DOCKER_HUB_REPOSITORY }}:${{ steps.extract_branch.outputs.branch }} --tag docker.io/${{ env.DOCKER_HUB_ORGANIZATION }}/${{ env.DOCKER_HUB_REPOSITORY }}:latest
      - name: Deploy container image without latest tag
        run: |
          echo "${{ secrets.DOCKER_HUB_TOKEN }}" | docker login -u "${{ secrets.DOCKER_HUB_USERNAME }}" --password-stdin docker.io
          docker push docker.io/${{ env.DOCKER_HUB_ORGANIZATION }}/${{ env.DOCKER_HUB_REPOSITORY }} --all-tags
          echo docker ${{ env.DOCKER_HUB_REPOSITORY }} without tag done
      - uses: sigstore/cosign-installer@main
      - name: Write signing key to disk (only needed for `cosign sign --key`)
        run: echo "${{ secrets.COSIGN_PRIVATE_KEY }}" > cosign.key
      - name: Sign container image with annotations from our environment
        env:
          COSIGN_PASSWORD: ${{ secrets.COSIGN_PASSWORD }}
        run: |
          cosign sign -y --key cosign.key \
            -a "repo=${{ github.repository }}" \
            -a "workflow=${{ github.workflow }}" \
            -a "ref=${{ github.sha }}" \
            docker.io/${{ env.DOCKER_HUB_ORGANIZATION }}/${{ env.DOCKER_HUB_REPOSITORY }}:latest