Image proxy, listen on $PORT

Author: sigurdm

pkg/image_proxy/lib/image_proxy_service.dart

@@ -311,7 +311,12 @@ void main(List<String> args) async {
   final server = await serve(
     handler,
     InternetAddress.anyIPv6,
-    int.tryParse(Platform.environment['IMAGE_PROXY_PORT'] ?? '') ?? 80,
+    int.tryParse(
+          Platform.environment['IMAGE_PROXY_PORT'] ??
+              Platform.environment['PORT'] ??
+              '',
+        ) ??
+        8080,
   );
   print('Serving image proxy on ${server.address}:${server.port}');
 }

tool/build_image_proxy.yaml

@@ -38,6 +38,7 @@ steps:
         --quiet \
         --set-env-vars HMAC_KEY_ID="projects/$PROJECT_ID/locations/us-central1/keyRings/image-proxy-key-ring/cryptoKeys/image-proxy-mac-key/cryptoKeyVersions/1" \
         --service-account="image-proxy@$PROJECT_ID.iam.gserviceaccount.com"
+        --command=""
     env:
       - 'PROJECT_ID=$PROJECT_ID'
       - 'TAG_NAME=$TAG_NAME'