💡 idea: Always refer to commit-tagged image in ci:build:image.

Or could use
`echo "$DOCKER_METADATA" | jq -r '.tags[] | select(. | test("sha-"))'`.

See docker/metadata-action#164.

.github/workflows/ci:build:image.yml

@@ -139,7 +139,7 @@ jobs:
             --env "MONGO_URL=${MONGO_URL}" \
             --env "PORT=${PORT}" \
             --name server \
-            ${{ fromJSON(needs.build.outputs.server-image).tags[0] }}
+            ghcr.io/${{ github.repository }}:sha-${{ github.sha }}
 
       - name: Retrieve server container IP address
         id: server-container-ip-address