build-and-push.yaml

name: Docker Build and Push

# This workflow is triggered both on tag push event and workflow_dispatch event to the repository.
on:
  push:
    tags:
      - 'v*'
  workflow_dispatch:
  
jobs:
  build-and-push:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          # list of Docker images to use as base name for tags
          images: |
            milvusdb/birdwatcher
          # generate Docker tags based on the following events/attributes
          tags: |
            # trigger only on a push tag event. It requires a Git tag that follows semantic versioning (semver) conventions.
            # For example, if the Git tag is v1.2.3, the output will be formatted as '1.2.3'.
            type=semver,pattern={{version}}
            # This setting outputs the Git commit hash as a Docker tag(e.g., 'sha-ad132f5').
            type=sha
            # This custom tag is generated only when the workflow is triggered via 'workflow_dispatch' event. 
            # The format combines branch name, current date, and commit hash. Example format: 'feature-branch-20231207-ad132f5'.
            type=raw,value={{branch}}-{{date 'YYYYMMDD'}}-{{sha}},enable=${{ github.event == 'workflow_dispatch' }}

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USER }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}