That amounts to creating own db migration tool.

Writing idempotent DDL is not that hard and then you don’t have the problem the migration tools solve (tracking state).

Which of course will give you around 10% of what liquibase and flyway do.

everything is always super easy here on HN, liquibase is just SQL you know :)

It takes some thinking, but you can just use rsync to build your own version of Dropbox.