Currently the tests are a large monolith which makes their development cumbersome. They should be separated into several lightweight suites that can be called independently.

Context

Taken from #1185 (comment)

• separate tests into smaller, independent chunks (e.g. one suite per container)
• ensure cleanup really does clean up
• replace sleeps with health checks and timeouts
• add a simple test that ensures the startup of the service was successful before running the testsuite
• ensure that test containers are stopped automatically after their test has run
• fix non deterministic tests (where restarting does change the result)
• reduce interference between containers by separating their config folders