Add instructions on how to activate PGroonga

README.md

@@ -63,6 +63,20 @@ podman run -d \
   postgres:14-alpine
 ```
 
+If you want to use PGroonga, run the command below instead.
+
+```sh
+podman run -d \
+  --pod akkoma \
+  --restart unless-stopped \
+  --name akkoma-db \
+  -e POSTGRES_DB=YOUR_DB_NAME \
+  -e POSTGRES_USER=YOUR_DB_USER \
+  -e POSTGRES_PASSWORD=YOUR_DB_PASS \
+  -v ${PWD}/docker-db/:/var/lib/postgresql/data/:Z \
+  groonga/pgroonga:3.1.1-alpine-14
+```
+
 ### 4. Setting up the backend
 
 ```sh
@@ -89,6 +103,22 @@ A few notes on setup
 - Make sure your database hostname is set correctly (e.g. localhost)
 - Make sure your database password is also set correctly (don't leave it auto-generated)
 - You should set the IP to listen on to 0.0.0.0
+
+### 4.1. Apply the optional PGroonga migration
+
+Make sure you apply the migration **before** the first restart of the container, otherwise you will be stuck in a loop of restarts.
+
+_To apply the migration after the first restart, please refer to [the guide down below](#switch-to-pgroonga)._
+
+```sh
+podman exec -it akkoma-web \
+  pleroma_ctl \
+  migrate \
+  --migrations-path priv/repo/optional_migrations/pgroonga
+```
+
+You can revert the applied changes anytime by replacing `migrate` with `rollback`.
+
 ### 5. Test your setup
 
 ```sh
@@ -127,6 +157,51 @@ podman exec -it akkoma-web \
 
 Follow the printed link to set your password.
 
+### 8. Optional steps
+
+#### Switch to PGroonga
+
+Before moving forward, make sure you have stopped the backend for safety.
+
+```sh
+podman stop akkoma-web
+```
+
+After stopping the backend, change `config :pleroma, :database, pgroonga_enabled` to `true`.
+
+```ex
+config :pleroma, :database,
+  rum_enabled: false,
+  pgroonga_enabled: true # set this option to true
+```
+
+If you have command history enabled in your shell, all you need to do is remove the `--name NAME` option and add `pleroma_ctl migrate --migrations-path priv/repo/optional_migrations/pgroonga` to the end of the command.
+
+```sh
+podman run -d \
+  --pod akkoma-pod \
+  --restart unless-stopped \ # this option is optional (bruh)
+  # --name akkoma-web \ # make sure to remove this option to avoid name conflict
+  -e DB_NAME=YOUR_DB_NAME \
+  -e DB_USER=YOUR_DB_USER \
+  -e DB_PASS=YOUR_DB_PASS \
+  -v ${PWD}/static/:/var/lib/akkoma/static/:Z \
+  -v ${PWD}/uploads/:/var/lib/akkoma/uploads/:Z \
+  -v ${PWD}/etc/:/etc/akkoma/:Z \
+  akkoma \
+  pleroma_ctl \
+  migrate \
+  --migrations-path priv/repo/optional_migrations/pgroonga
+```
+
+You can revert the applied changes anytime by replacing `migrate` with `rollback`.
+
+Don't forget to start the container you stopped at the beginning of this guide.
+
+```sh
+podman start akkoma-web
+```
+
 ---
 
 ## Akkoma