You should only have to backup the Postgres database. But it won’t hurt to have a copy of your compose file as well.
This GitHub issue has the steps you should use. And answers all your other questions too.
You should only have to backup the Postgres database. But it won’t hurt to have a copy of your compose file as well.
This GitHub issue has the steps you should use. And answers all your other questions too.
Try out Copyq