A database is never hard to install, but it can be tricky to operate. You have to at least have at least a slight idea about the specifics, from different type

A database is never hard to install, but it can be tricky to operate. You have to at least have at least a slight idea about the specifics, from different types of vacuum to how it behaves in low memory conditions. The idea that docker has something to do this is a misdirection at best. And if you think sqlite has many knobs and special modes, wait until you hear about Postgres.