Add installation guide with different database

docs/installation/docker-different-database.md

@@ -0,0 +1,53 @@
+# Installation guide (Docker with a different database)
+
+**Read the [upgrading guide](../../UPGRADING.md) if you are upgrading from a previous version.**
+
+Many Notes uses SQLite by default but supports other databases like MariaDB, MySQL, and PostgreSQL. This guide will use MariaDB, but you can easily adapt it to one of the other databases.
+
+## Instructions
+
+Create a `compose.yaml` file with:
+
+```yaml
+services:
+  php:
+    image: brufdev/many-notes:latest
+    restart: unless-stopped
+    environment:
+      - DB_CONNECTION=mariadb
+      - DB_HOST=many-notes-mariadb-1
+      - DB_PORT=3306
+      - DB_DATABASE=manynotes
+      - DB_USERNAME=user
+      - DB_PASSWORD=USER_PASSWORD # change password
+    volumes:
+      - storage-logs:/var/www/html/storage/logs
+      - storage-private:/var/www/html/storage/app/private
+      - storage-public:/var/www/html/storage/app/public
+      - storage-sessions:/var/www/html/storage/framework/sessions
+    ports:
+      - 80:8080
+  mariadb:
+    image: mariadb:11
+    restart: unless-stopped
+    environment:
+      - MARIADB_ROOT_PASSWORD=ROOT_PASSWORD # change password
+      - MARIADB_DATABASE=manynotes
+      - MARIADB_USER=user
+      - MARIADB_PASSWORD=USER_PASSWORD # change password
+    volumes:
+      - database:/var/lib/mysql
+
+volumes:
+  database:
+  storage-logs:
+  storage-private:
+  storage-public:
+  storage-sessions:
+```
+
+Make sure to change the passwords. Feel free to change anything else if you know what you're doing, and read the [customization section](../../README.md#customization) before continuing. Then run:
+
+```shell
+docker compose up -d
+```