I use AWS's Elastic Container Service with Fargate. We have three AWS accounts (dev, test and prod) - we build the containers in dev, build one for test when we

I use AWS's Elastic Container Service with Fargate. We have three AWS accounts (dev, test and prod) - we build the containers in dev, build one for test when we've tagged a release and then push that one to prod. Deployment is using Serverless (we pass the container tag through to the CloudFormation). It works well enough - no complaints. This is a fairly simple use-case though (immutable API containers) - maybe you'd have more problems if you tried putting the database and queue systems in ECS.