added instruction to find the location of your docker directory (especially useful for those who used ansible since they never had to setup docker manually)
This upgrade requires a newer version of postgres, which **must be done manually**. Do not try to use Ansible.
-`cd` to your lemmy docker directory and run this helper script:
+`cd` to your lemmy docker directory which can be found in `/srv/lemmy/(domainname)` and run this helper script:
```
sudo wget https://raw.githubusercontent.com/LemmyNet/lemmy/main/scripts/postgres_12_to_15_upgrade.sh