My own modifications. Enjoy!

- Bronze

UPDATE-DB.md

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+# HOW TO UPDATE POSTGRES DATABASE
+
+If you want to upgrade your database version (say from postgres 14 to 15)
+
+1. Create a backup of your instance! Or at least a copy of the postgres folder!
+
+2. Dump your database with the following command:
+
+`docker exec -u pleroma pleroma_db pg_dump -Fc pleroma > db.dump`
+
+3. Change the [image tag](https://hub.docker.com/_/postgres/) for your db under `docker-compose.yml`
+
+4. Delete your existing postgres folder with `rm -rvf postgres`
+
+5. Bring up only the database container with
+
+`docker compose up db -d`
+
+6. Restore your database backup into the new database with
+
+`docker exec -i -u pleroma pleroma_db pg_restore -C -d postgres < db.dump`
+
+7. Launch pleroma_web with the following command and watch for errors
+
+`docker compose up web -d`
+
+`docker compose logs web db -f`
+
+Should there be any errors... well that's what backups are for! Restore from the backup you made.