Check The Server URL
For local development using composer the Docker/Composers/Secrets/docker-compose-rds-secrets.yml file will have the DB Host URL.
For ECS deployments the URL is in the Task Definition that is being run by the service. After updating the task you will want to deploy it to the ECS Service with Force Deployment and update the running service.
Check The Port
Newer database connections are not connecting on the default MySQL Port 3306 and instead use a different port. Newer systems use port 3309 for the development database server per the RDS database setup example.
Edit the Docker/Composers/Secrets/docker-compose-rds-secrets.yml file and add the port to the end:
