First customization to avm99963-bugs

- Only a service is used (default) in order to keep usage within Google
  Cloud's free tier.
- Settings have been adapted.
- Only a single DB instance is used (primary).
- Some cron jobs are executed less often.
- |threadsafe| has been set to "yes" so the single instance can serve
  concurrent requests (otherwise the search/list issues function
  breaks).

GitOrigin-RevId: 52130750a30a5aa2234a6dd3f5ae23c3fb1b8343
diff --git a/dev-services.yml b/dev-services.yml
index 6b5bbe2..0c93db3 100644
--- a/dev-services.yml
+++ b/dev-services.yml
@@ -17,7 +17,7 @@
   cloud-tasks-emulator:
     # As of 9/18/2020 latest tag is built from source at
     # https://github.com/aertje/cloud-tasks-emulator/commit/ff9a1afc8f3aeedbc6ca1f468b2c53b74c18a6e6
-    image: 'us.gcr.io/monorail-dev/cloud-tasks-emulator:latest'
+    image: 'ghcr.io/aertje/cloud-tasks-emulator:latest'
     container_name: 'cloud-tasks-emulator'
     ports:
       - '9090:9090'