diff --git a/.github/workflows/docker-publish.yml b/.github/workflows/docker-publish.yml
index fb2c53d..cebba42 100644
--- a/.github/workflows/docker-publish.yml
+++ b/.github/workflows/docker-publish.yml
@@ -67,7 +67,7 @@ jobs:
         id: meta
         uses: docker/metadata-action@96383f45573cb7f253c731d3b3ab81c87ef81934 # v5.0.0
         with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}/master
 
       # Build and push Docker image with Buildx (don't push on PR)
       # https://github.com/docker/build-push-action
@@ -87,9 +87,12 @@ jobs:
       # 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 (except on PRs)
+      - 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: ${{ steps.build-and-push.outputs.digest }}
+        # This step uses the identity token to provision an ephemeral certificate
+        # against the sigstore community Fulcio instance.
         run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}