Add possiblity to share gallerie with public link

photo21/settings.py

@@ -149,6 +149,20 @@ if _db_engine == "postgres":
             "PORT": config("DB_PORT", default="5432"),
         }
     }
+elif _db_engine == "mariadb":
+    DATABASES = {
+        "default": {
+            "ENGINE": "django.db.backends.mysql",
+            "NAME": config("DB_NAME", default="photo21"),
+            "USER": config("DB_USER", default="photo21"),
+            "PASSWORD": config("DB_PASSWORD", default=""),
+            "HOST": config("DB_HOST", default="localhost"),
+            "PORT": config("DB_PORT", default="3306"),
+            "OPTIONS": {
+                "charset": "utf8mb4",
+            },
+        }
+    }
 elif _db_engine == "sqlite":
     DATABASES = {
         "default": {
@@ -160,7 +174,7 @@ elif _db_engine == "sqlite":
         }
     }
 else:
-    raise ValueError(f"Unknown DB_ENGINE '{_db_engine}'. Must be 'sqlite' or 'postgres'.")
+    raise ValueError(f"Unknown DB_ENGINE '{_db_engine}'. Must be 'sqlite', 'postgres' or 'mariadb'.")
 
 CACHES = {
     "default": {