gh actions syntax fix

Author: haarg

.github/workflows/build-container.yml

@@ -73,7 +73,7 @@ jobs:
           annotations: ${{ steps.meta.outputs.annotations }}
       - name: Find tag names
         id: find-tag-names
-        run:
+        run: |
           echo "${{ steps.meta.outputs.json }}" | jq -r '.tags | reverse | map ( { (split(":").[-1]) : . }) | add | keys[] as $k | "\($k)=\(.[$k])"' >> "$GITHUB_OUTPUT"
       - name: Update deployed image
         if: steps.find-tag-names.outputs.latest