Updated docker file, created backup and changed to local persistence for DB

.gitignore

@@ -0,0 +1 @@
+/docker/mysql-data/

docker/docker-compose.yml

@@ -12,7 +12,7 @@ services:
     ports:
       - "3307:3306"
     volumes:
-      - mysql_data:/var/lib/mysql
+      - ./mysql-data:/var/lib/mysql
     healthcheck:
       test: ["CMD", "mysqladmin", "ping", "-h", "localhost", "-p1234"]
       interval: 10s
@@ -26,7 +26,8 @@ services:
       dockerfile: ../docker/Dockerfile-api
     container_name: memberflow-backend
     depends_on:
-      - mysql
+      mysql:
+        condition: service_healthy
     ports:
       - "8080:8080"
     environment:
@@ -37,6 +38,7 @@ services:
       JWT_EXPIRATION: 7200000
 
 
+
   frontend:
     build:
       context: ..
@@ -45,7 +47,4 @@ services:
     depends_on:
       - backend
     ports:
-      - "3000:80"
-
-volumes:
-  mysql_data:
+      - "3000:80"