EILI5? Examples for dummies?

[evanrich]

I'm probably dense, but is there like an ELI5 guide or some examples somewhere? I'm not grasping the (well written) docs.

I've got the following actions:

   - name: Build Docker image
      run: docker build -t harbor.server.tld/library/package:latest ./Docker/

    - name: Minor version for each merge
      id: taggerFinal
      uses: anothrNick/[email protected]
      env:
        GITHUB_TOKEN: ${{ secrets.REPO_PUSH_TOKEN }}
        WITH_V: true
        GIT_API_TAGGING: false

    - name: tag with name
      run: docker tag  harbor.server.tld/library/package:latest harbor.server.tld/library/package:${{ steps.taggerFinal.outputs.new_tag }}

I've replaced it with the following from the docker suggested code:

jobs:
  docker:
    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: |
            name/app
            ghcr.io/username/app            
          # generate Docker tags based on the following events/attributes
          tags: |
            type=schedule
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
            type=semver,pattern={{major}}.{{minor}}
            type=semver,pattern={{major}}
            type=sha            
      - name: Login to Docker Hub
        if: github.event_name != 'pull_request'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}
      - name: Build and push
        uses: docker/build-push-action@v5
        with:
          context: .
          push: ${{ github.event_name != 'pull_request' }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}

but i have questions.. How does the semver know to increment? how does latest get applied? when I tried running this, I only got a sha and branch name:

Do I still need to run semver to create a tag first? thanks!

[evanrich]

fwiw, i tried running this after creating a new tag, v1.13.0, but all that got generated was

does it not like the "v" in front of the semver?

[peterweissdk]

I think you need to add the flavor option.

• name: Docker meta
  With:
  flavor: |
  latest=false