Replace extract-image-names.sh with JS script

Author: danielhollas

.github/workflows/build.yml

@@ -73,15 +73,16 @@ jobs:
                       build.json
                       .github/workflows/env.hcl
 
-            - name: Set output image names
-              id: bake_metadata
-              # bake-action metadata output has gotten too big, so we first write it
-              # to a file. See https://github.com/aiidalab/aiidalab-docker-stack/issues/491
-              run: |
-                  cat << EOF > bake_metadata.json
-                  ${{ steps.build-upload.outputs.metadata }}
-                  EOF
-                  images=$(.github/workflows/extract-image-names.sh bake_metadata.json)
-                  echo "images=${images}" >> "${GITHUB_OUTPUT}"
-                  # Pretty-print for GHA logs
-                  echo "$images" | jq
+            - name: Set output variables
+              uses: actions/github-script@v7
+              with:
+                  script: |
+                      const data = JSON.parse(process.env.BAKE_METADATA,'utf-8')
+                      for (const key in JSON.parse(process.env.BAKE_METADATA || '{}', 'utf-8')) {
+                        if (data.hasOwnProperty(key)) {
+                          const entry = data[key];
+                          core.setOutput(`${key.toUpperCase().replace(/-/g, "_")}_IMAGE`, `${entry["image.name"]}@${entry["containerimage.digest"]}`);
+                        }
+                      }
+              env:
+                  BAKE_METADATA: ${{ steps.build-upload.outputs.metadata }}