Enabled --regions

Author: yvan674

action.yml

@@ -294,7 +294,15 @@ inputs:
 
   region:
     description: |-
-      Region in which the Cloud Run services are deployed.
+      Region in which the Cloud Run services are deployed. Providing a list enables 
+      multi-region deployment. See the [documentation for deploying a multi-region 
+      service](https://docs.cloud.google.com/run/docs/multiple-regions#deploy)
+
+      Please note, this GitHub Action cannot parse regions provided in the metadata
+      YAML file and will always fallback to the region provided here, defaulting always
+      to `us-central1` if none is given. This is a known issue but this behavior being 
+      kept to avoid breaking existing actions.
+
     default: 'us-central1'
     required: false
 

package-lock.json

@@ -248,12 +248,14 @@ export async function run(): Promise<void> {
         .flat()
         .filter((e) => e !== undefined && e !== null && e !== '')
         .join(',');
-      deployCmd.push('--region', regions);
-      updateTrafficCmd.push('--region', regions);
-    }
-    if (projectId) {
-      deployCmd.push('--project', projectId);
-      updateTrafficCmd.push('--project', projectId);
+
+      if (region?.length > 1) {
+        deployCmd.push('--regions', regions);
+        updateTrafficCmd.push('--regions', regions);
+      } else {
+        deployCmd.push('--region', regions);
+        updateTrafficCmd.push('--region', regions);
+      }
     }
 
     // Add optional deploy flags