Fix CI workflow to handle missing Docker Hub secrets

.github/workflows/ci.yml

@@ -11,6 +11,7 @@ on:
 
 env:
   IS_PULL: ${{ github.event_name == 'pull_request' }}
+  HAS_SECRETS: ${{ secrets.DOCKERHUB_USERNAME != '' && secrets.DOCKERHUB_TOKEN != '' && secrets.DOCKERHUB_ACCOUNT != '' && secrets.DOCKERHUB_REPOSITORY != '' }}
 
 defaults:
   run:
@@ -23,6 +24,7 @@ jobs:
     runs-on: ubuntu-latest
     outputs:
       strategy: ${{ steps.generate-jobs.outputs.strategy }}
+      has-secrets: ${{ steps.generate-jobs.outputs.has-secrets }}
     steps:
       - uses: actions/checkout@v4
         with:
@@ -36,7 +38,7 @@ jobs:
           # For pushes to mainline or PRs targeting mainline, only build changed versions
           if [[ ("${{ github.event_name }}" == "push" && "${{ github.ref }}" == "refs/heads/mainline")]] ; then
             changed_files=$(git diff --name-only HEAD~1 HEAD)
-            if echo $changed_files | grep -qE "^(versions\.json|[0-9]+\.[0-9]+/|unstable/)"; then
+            if printf "%s\n" "$changed_files" | grep -qE "^(versions\.json|[0-9]+\.[0-9]+/|unstable/)"; then
               changed_versions=$(echo $changed_files | grep -oE "[0-9]+\.[0-9]+|unstable" | sort -u | tr '\n' '|' | sed 's/|$//')
               if [[ -n "$changed_versions" ]]; then
                 strategy=$(jq -c --arg versions "$changed_versions" '{"fail-fast": .["fail-fast"],"matrix":{"include":[ .matrix.include[]|select(.meta.entries[0].directory | test($versions))]}}' <<<"$strategy")
@@ -47,8 +49,8 @@ jobs:
           fi
 
           echo "strategy=$(jq -c . <<<"$strategy")" >> "$GITHUB_OUTPUT"
+          echo "has-secrets=${{ env.HAS_SECRETS }}" >> "$GITHUB_OUTPUT"
           jq . <<<"$strategy" # debugging aid to visually inspect the generated matrix
-
   # Job to build and push Docker images individually for each architecture/platform
   build_and_push:
     needs: [generate-jobs]
@@ -78,6 +80,8 @@ jobs:
         run: |
           if [[ "${{ env.IS_PULL }}" == "true" ]]; then
             echo "DOCKER_REPO_NAME=${{ github.actor }}/valkey-bundle" >> $GITHUB_ENV
+          elif [[ "${{ env.HAS_SECRETS }}" != "true" ]]; then
+            echo "DOCKER_REPO_NAME=${{ github.actor }}/valkey-bundle" >> $GITHUB_ENV
           else
             echo "DOCKER_REPO_NAME=${{ secrets.DOCKERHUB_ACCOUNT }}/valkey-bundle" >> $GITHUB_ENV
           fi
@@ -89,7 +93,7 @@ jobs:
         uses: docker/setup-buildx-action@v3
 
       - name: Login to Docker Hub
-        if: env.IS_PULL != 'true'
+        if: env.IS_PULL != 'true' && env.HAS_SECRETS == 'true'
         uses: docker/login-action@v3
         with:
           registry: docker.io
@@ -120,8 +124,8 @@ jobs:
         with:
           file: ./${{ matrix.version.meta.entries[0].directory }}/Dockerfile
           platforms: ${{ matrix.platform }}
-          # Push is true only for push events
-          push: ${{ env.IS_PULL != 'true' }}
+          # Push is true only for push events if the secrets have been created
+          push: ${{ env.HAS_SECRETS == 'true' && env.IS_PULL != 'true' }}
           outputs: type=image,push-by-digest=true,name-canonical=true
           tags: ${{ env.DOCKER_REPO_NAME }}
           provenance: false
@@ -191,7 +195,7 @@ jobs:
     steps:
       - name: Set DOCKER_REPO_NAME dynamically
         run: |
-          if [[ "${{ env.IS_PULL }}" == "true" ]]; then
+          if [[ "${{ env.IS_PULL }}" == "true" || "${{ env.HAS_SECRETS }}" != "true" ]]; then
             echo "DOCKER_REPO_NAME=${{ github.actor }}/valkey-bundle" >> $GITHUB_ENV
           else
             echo "DOCKER_REPO_NAME=${{ secrets.DOCKERHUB_ACCOUNT }}/valkey-bundle" >> $GITHUB_ENV
@@ -212,14 +216,15 @@ jobs:
           merge-multiple: false
 
       - name: Login to Docker Hub
+        if: env.HAS_SECRETS == 'true' && env.IS_PULL != 'true'
         uses: docker/login-action@v3
-        if: env.IS_PULL != 'true'
         with:
           registry: docker.io
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Set up Docker Buildx
+        if: env.HAS_SECRETS == 'true'
         uses: docker/setup-buildx-action@v3
 
       # Use imagetools to combine the arch-specific digests into respective multi-arch manifest
@@ -273,16 +278,16 @@ jobs:
             digest_args=$(printf "${{ env.DOCKER_REPO_NAME }}@sha256:%s " digests/$combo/*)
             digest_args=${digest_args//digests\/$combo\//}
 
-            if [[ "${{ env.IS_PULL }}" == "true" ]]; then
+            if [[ "${{ env.IS_PULL }}" == "true" || "${{ env.HAS_SECRETS }}" != "true" ]]; then
               echo "Dry run: docker buildx imagetools create $tag_args $digest_args"
             else
               docker buildx imagetools create $tag_args $digest_args
             fi
           done
-          
+
   update-dockerhub-description:
-    if: github.event_name == 'push' && github.ref == 'refs/heads/mainline'
-    needs: merge-manifest
+    if: github.event_name == 'push' && github.ref == 'refs/heads/mainline' && needs.generate-jobs.outputs.has-secrets == 'true'
+    needs: [merge-manifest, generate-jobs]
     name: Update DockerHub Description
     uses: ./.github/workflows/update-dockerhub-docs.yml
     secrets: