I have followed them. Whenever I run the sudo sh postgres_12_to_15_upgrade.sh
I get
Do not stop in the middle of this upgrade, wait until you see the message: Upgrade complete.
Stopping lemmy and all services...
Stopping donkysocial_postgres_1 ... done
Stopping donkysocial-lemmy-ui-1 ... done
Stopping donkysocial-lemmy-1 ... done
Stopping donkysocial-pictrs-1 ... done
Stopping donkysocial-postfix-1 ... done
Make sure postgres is started...
Starting donkysocial_postgres_1 ... done
Exporting the Database to 12_15.dump.sql ...
Error response from daemon: Container a1e2ddeced29b9060049e920b49bcea87189b0122a68f015ada202a6181bd2a0 is restarting, wait until the container is running
Alright, sorry for bothering you.