How does this work for booting up a database or other systems to run integration tests and such? I don't see anything about that sort of thing. Is the idea to

How does this work for booting up a database or other systems to run integration tests and such? I don't see anything about that sort of thing. Is the idea to bake everything into a single docker image and run that? Also, what are the resource limits (really, just interested in ram) for that listed price?