fix: use environment variables for MariaDB credentials in docker compose

komodo/general-purpose/hortusfox/compose.yaml

@@ -32,10 +32,10 @@ services:
     image: mariadb
     restart: always
     environment:
-      MARIADB_ROOT_PASSWORD: my-secret-pw
+      MARIADB_ROOT_PASSWORD: ${DB_ROOT_PASSWORD}
       MARIADB_DATABASE: hortusfox
-      MARIADB_USER: user
-      MARIADB_PASSWORD: password
+      MARIADB_USER: ${DB_USERNAME}
+      MARIADB_PASSWORD: ${DB_PASSWORD}
     ports:
       - "3306:3306"
     volumes: