Fix registry cleanup workflow (#6861)

.github/workflows/registry_cleanup.yml

@@ -39,9 +39,9 @@ jobs:
           echo "Dry run: ${DRY_RUN}"
           echo ""
 
-          # List of repositories to clean
-          # Use tail to skip header row in case --no-header doesn't work
-          REPOS=$(doctl registry repository list-v2 --format Name --no-header | grep -v '^Name$' | grep -v '^$')
+          # List repositories via JSON. Text output can wrap table rows and make
+          # headers/tags/digests look like repository names.
+          REPOS=$(doctl registry repository list-v2 "${REGISTRY}" --output json | jq -r '.[] | .name // .Name // empty')
 
           for REPO in $REPOS; do
             echo "=== Processing repository: ${REPO} ==="
@@ -88,5 +88,20 @@ jobs:
         if: github.event_name == 'schedule' || (github.event_name == 'workflow_dispatch' && github.event.inputs.dry_run == 'false')
         run: |
           echo "Starting garbage collection..."
-          doctl registry garbage-collection start --force
-          echo "Garbage collection started. It may take a few minutes to complete."
+          set +e
+          GC_OUTPUT=$(doctl registry garbage-collection start --force 2>&1)
+          GC_STATUS=$?
+          set -e
+
+          echo "$GC_OUTPUT"
+          if [ "$GC_STATUS" -eq 0 ]; then
+            echo "Garbage collection started. It may take a few minutes to complete."
+            exit 0
+          fi
+
+          if echo "$GC_OUTPUT" | grep -q "automated garbage collection is enabled"; then
+            echo "Automated garbage collection is enabled for this registry; skipping manual garbage collection."
+            exit 0
+          fi
+
+          exit "$GC_STATUS"