Say you have an app with a function that needs to run another app - but rarely so it should be shut down most of the time. The first app is running in a docker container and needs some functionality to launch the other app, which runs in another contianer. I would figure there is a standard way of doing this by now. I’d prefer not to do docker-in-docker, though in one case that could work.
In another case, an app running in a docker container needs to trigger a rebuild of that container itself. Which means the host needs to run docker-compose build that-container.
What is the ideal way to do this?
Thank you everyone 