Update docs/maintainers/tutorial.md

docs/maintainers/tutorial.md

@@ -52,6 +52,17 @@ Open the `compose.yml` in your favourite editor and have a gander 🦢. The
 
 The resulting `compose.yml` is available [here](https://git.autonomic.zone/coop-cloud/matomo/src/branch/main/compose.yml).
 
+### Updating the `.env.sample`
+
+Open the `.env.sample` file and add the following
+
+```
+DB_PASSWORD_VERSION=v1
+DB_ROOT_PASSWORD_VERSION=v1
+```
+
+The resulting `.env.sample` is available [here](https://git.coopcloud.tech/coop-cloud/matomo/src/branch/main/.env.sample)
+
 ### Test deployment
 
 !!! note "Running Co-op Cloud server required!"