refactor: clean up Docker publish workflow by removing unnecessary steps and comments

.github/workflows/docker-publish.yml

@@ -5,13 +5,11 @@ on:
     types: [published]
   push:
     branches: [ "main" ]
-    # Publish semver tags as releases.
     tags: [ 'v*.*.*' ]
   pull_request:
     branches: [ "main" ]
 
 env:
-  # Use github.repository as <account>/<repo>
   IMAGE_NAME: ${{ github.repository }}
   REGISTRY: ghcr.io
 
@@ -21,28 +19,14 @@ jobs:
     permissions:
       contents: read
       packages: write
-      # This is used to complete the identity challenge
-      # with sigstore/fulcio when running outside of PRs.
-      id-token: write
 
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
 
-      # Install the cosign tool except on PR
-      # https://github.com/sigstore/cosign-installer
-      - name: Install cosign
-        if: github.event_name != 'pull_request'
-        uses: sigstore/cosign-installer@v3.3.0
-        with:
-          cosign-release: 'v2.1.1'
-
-      # Set up BuildKit Docker container builder to enable modern features
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      # Login against a Docker registry
-      # https://github.com/docker/login-action
       - name: Log into registry ${{ env.REGISTRY }}
         if: github.event_name != 'pull_request'
         uses: docker/login-action@v3
@@ -51,8 +35,6 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      # Extract metadata (tags, labels) for Docker
-      # https://github.com/docker/metadata-action
       - name: Extract Docker metadata
         id: meta
         uses: docker/metadata-action@v5
@@ -65,8 +47,6 @@ jobs:
             type=semver,pattern={{major}}.{{minor}}
             type=raw,value=latest,enable={{is_default_branch}}
 
-      # Build and push Docker image with Buildx
-      # https://github.com/docker/build-push-action
       - name: Build and push Docker image
         id: build-and-push
         uses: docker/build-push-action@v5
@@ -77,16 +57,3 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha
           cache-to: type=gha,mode=max
-
-      # Sign the resulting Docker image digest except on PRs.
-      # This will only write to the public Rekor transparency log when the Docker
-      # repository is public to avoid leaking data.  If you would like to publish
-      # transparency data even for private images, pass --force to cosign below.
-      # https://github.com/sigstore/cosign
-      - name: Sign the published Docker image
-        if: github.event_name != 'pull_request'
-        env:
-          # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
-          TAGS: ${{ steps.meta.outputs.tags }}
-          DIGEST: ${{ steps.build-and-push.outputs.digest }}
-        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}