How to make volumes permanent with Docker Compose v2

Question

I realize other people have had similar questions but this uses v2 compose file format and I didn\'t find anything for that.

I want to make a very simple test a

Answer 1

This was traced back to a bad documentation from MemSQL. MemSQL data path in memsql/quickstart container is /memsql and not /var/lib/memsql like in a stand-alone installation (and in MemSQL docs), and definitely not /data like somebody told me.