Fixes for error handling and permissions

Signed-off-by: Samuel Monson <[email protected]>

Author: sjmonson

.github/workflows/container-maintenance.yml

@@ -9,6 +9,9 @@ on:
 concurrency:
   group: ${{ github.workflow }}
 
+permissions:
+  packages: write
+
 jobs:
   cleanup-container-tags:
     runs-on: ubuntu-latest
@@ -36,13 +39,15 @@ jobs:
           registry: ghcr.io/${{ github.repository_owner }}
       - name: Get list of tags
         run: |
+          # Fail step if any command fails
+          set -euo pipefail
           skopeo list-tags docker://${{ github.repository }} | jq --raw-output '.Tags[]' > tags
       - name: Get latest release and rc tags
         run: |
           STABLE_TAG="$(grep -P '^v\d+\.\d+\.\d+$' tags | sort -rV | head -n1)"
-          echo "STABLE_TAG=${STABLE_TAG:-v0.0.0}" >> $GITHUB_ENV
+          echo "stable_tag=${STABLE_TAG:-v0.0.0}" >> $GITHUB_ENV
           LATEST_TAG="$(grep -P '^v\d+\.\d+\.\d+' tags | sort -rV | head -n1)"
-          echo "LATEST_TAG=${LATEST_TAG:-v0.0.0}" >> $GITHUB_ENV
+          echo "latest_tag=${LATEST_TAG:-v0.0.0}" >> $GITHUB_ENV
       - name: Update latest and stable tags
         run: |
           skopeo copy docker://${{ github.repository }}:${{ env.stable_tag }} docker://${{ github.repository }}:stable