deploy from github actions

app/database.py

@@ -23,10 +23,12 @@ if DATABASE_URL:
         }
     engine = create_engine(
         DATABASE_URL,
+        pool_size=10,
+        max_overflow=20,
+        pool_timeout=30,
+        pool_recycle=180,
         pool_pre_ping=True,
-        pool_recycle=300,
-        connect_args=connect_args,
-        poolclass=NullPool
+        connect_args=connect_args
     )
 else:
     SQLITE_URL = "sqlite:///./musical_master.db"