Add possiblity to share gallerie with public link

docker-compose.yml

@@ -5,15 +5,16 @@ networks:
 
 services:
   db:
-    image: postgres:16
+    image: mariadb:11
     container_name: photo26-db
     restart: unless-stopped
     environment:
-      POSTGRES_DB: photo26
-      POSTGRES_USER: photo26
-      POSTGRES_PASSWORD: change-me
+      MARIADB_DATABASE: photo26
+      MARIADB_USER: photo26
+      MARIADB_PASSWORD: change-me
+      MARIADB_RANDOM_ROOT_PASSWORD: "yes"
     volumes:
-      - ./postgres_data:/var/lib/postgresql/data
+      - ./mariadb_data:/var/lib/mysql
     networks:
       - photo26
 
@@ -24,12 +25,12 @@ services:
     depends_on:
       - db
     environment:
-      DB_ENGINE: postgres
+      DB_ENGINE: mariadb
       DB_NAME: photo26
       DB_USER: photo26
       DB_PASSWORD: change-me
       DB_HOST: db
-      DB_PORT: 5432
+      DB_PORT: 3306
       SECRET_KEY: change-me
       EXTRA_HOSTS: photos.example.org
     volumes: