Automatically pushes the current Docker container to the GitHub Container Registery

push-to-ghcr.yml

name: Build and Push container to GHCR

on:
  push:
    tags: "*"

jobs:
  build_and_push:
    runs-on: ubuntu-latest
    permissions:
      packages: write
      contents: read
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Login to GitHub Container Registery (GHCR)
        run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.repository_owner }} --password-stdin

      - name: Build the image
        run: |
          docker build -t ${{ github.event.repository.name }} .

      - name: Push the latest build
        run: |
          IMAGE_ID=ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}
          IMAGE_ID=$(echo $IMAGE_ID | tr '[A-Z]' '[a-z]')

          VERSION=$(echo "${{ github.ref }}" | sed -e 's,.*/\(.*\),\1,')

          echo IMAGE_ID=$IMAGE_ID
          echo VERSION=$VERSION
          docker tag ${{ github.event.repository.name }} $IMAGE_ID:$VERSION
          docker push $IMAGE_ID:$VERSION

NOTES

• This works by using the Tag system (every time a tag is created the container gets pushed)
• The version scheme should be MAJOR.MINOR.PATCH (should not contain the v prefix, otherwise the workflow won't run)
• You should give packages access to the repo using the workflow (how to)