Update example with explanations

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -233,73 +233,3 @@ jobs:
         name: Dump context
         if: always()
         uses: crazy-max/ghaction-dump-context@v1
-
-  tags-labels:
-    runs-on: ubuntu-latest
-    services:
-      registry:
-        image: registry:2
-        ports:
-          - 5000:5000
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v2.3.2
-      -
-        name: Prepare
-        id: prep
-        run: |
-          DOCKER_IMAGE=localhost:5000/name/app
-          VERSION=noop
-          if [[ $GITHUB_REF == refs/tags/* ]]; then
-            VERSION=${GITHUB_REF#refs/tags/}
-          elif [[ $GITHUB_REF == refs/heads/* ]]; then
-            VERSION=$(echo ${GITHUB_REF#refs/heads/} | sed -r 's#/+#-#g')
-            if [ "${{ github.event.repository.default_branch }}" = "$VERSION" ]; then
-              VERSION=edge
-            fi
-          elif [[ $GITHUB_REF == refs/pull/* ]]; then
-            VERSION=pr-${{ github.event.number }}
-          fi
-          TAGS="${DOCKER_IMAGE}:${VERSION}"
-          if [ "${{ github.event_name }}" != "pull_request" ]; then
-            TAGS="${DOCKER_IMAGE}:sha-${GITHUB_SHA::8}"
-          fi
-          if [[ $VERSION =~ ^v[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
-            MINOR=${VERSION%.*}
-            MAJOR=${MINOR%.*}
-            TAGS="$TAGS,${DOCKER_IMAGE}:${MINOR},${DOCKER_IMAGE}:${MAJOR},${DOCKER_IMAGE}:latest"
-          fi
-          echo ::set-output name=version::${VERSION}
-          echo ::set-output name=tags::${TAGS}
-          echo ::set-output name=created::$(date -u +'%Y-%m-%dT%H:%M:%SZ')
-      -
-        name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
-      -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v1
-        with:
-          driver-opts: network=host
-      -
-        name: Build and push
-        uses: ./
-        with:
-          context: ./test
-          file: ./test/Dockerfile
-          push: true
-          tags: ${{ steps.prep.outputs.tags }}
-          labels: |
-            org.opencontainers.image.created=${{ steps.prep.outputs.created }}
-            org.opencontainers.image.source=${{ github.repositoryUrl }}
-            org.opencontainers.image.version=${{ steps.prep.outputs.version }}
-            org.opencontainers.image.revision=${{ github.sha }}
-            org.opencontainers.image.licenses=${{ github.event.repository.license.name }}
-      -
-        name: Inspect
-        run: |
-          docker buildx imagetools inspect localhost:5000/name/app:${{ steps.prep.outputs.version }}
-      -
-        name: Dump context
-        if: always()
-        uses: crazy-max/ghaction-dump-context@v1