I’ve tried it in iOS, and spent a lot of time fiddling with the settings, but for the life of me I can’t get a decent resolution from it. I get very distant points and I was no able to improve it, so I gave up :(

Sorry! I know it’s been ages, but this is what I use:

• For Postgres: https://github.com/prodrigestivill/docker-postgres-backup-local
• For MySQL: https://github.com/fradelg/docker-mysql-cron-backup

Not so long ago I had the same question myself, and I ended up setting 1 Postgress instance and 1 MySQL instance for all services to share. In the long run, I had so many version and settings incompatibilities across services that moved back to one DB per service that is tuned specifically for it. Also, I add a backup app to all my docker compose files that have a DB in it. This way, backups happen periodically and automatically.