diff --git a/Dockerfile b/Dockerfile
index ec1c2030e13afaa8a37c655290b57fd53b506c10..6a46a0d8bcb62b0b418a2da0fa8eab95fda381c9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,9 +6,6 @@ WORKDIR /var/www/html
 # Copy the current directory contents into the container at /var/www/html
 COPY . /var/www/html
 
-# Install mysqli dependency
-RUN docker-php-ext-install mysqli && docker-php-ext-enable mysqli
-
 # Expose port 80 for the web server
 EXPOSE 80
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 6f441f25fc68c0c56c75f668986aa78653ec3d6c..a3823ea7679680c20e49a8d717e752c8d3581580 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -2,27 +2,9 @@ version: '3.3'
 services:
   saranghaengbok:
     build: .
-    image: tubes-1:latest
+    container_name: php_app
     ports:
       - 8008:80
     environment:
-      DB_HOST: db
-  db:
-    image: mysql:latest
-    ports:
-      - 6603:3306
-    volumes:
-      - db_data:/var/lib/mysql
-    environment:
-      MYSQL_ROOT_PASSWORD: admin
-  phpmyadmin:
-    image: phpmyadmin:latest
-    restart: always
-    ports:
-      - 8080:80
-    environment:
-      - PMA_ARBITRARY=1
-      - PMA_PORT=3306
-      - PMA_HOST=db
-volumes:
-  db_data:
+      DB_URL: mysql://db/saranghaengbok_php
+  
diff --git a/server/controllers/connect_database.php b/server/controllers/connect_database.php
index d4631099b258df113bad1fc9705c81ad0c8bcf83..7a7f49b2ddfff508b3823c52951bcff4f98afb20 100644
--- a/server/controllers/connect_database.php
+++ b/server/controllers/connect_database.php
@@ -1,7 +1,7 @@
 <?php
     function connect_database(){
     // Create a connection
-    $conn = new mysqli('db', 'saranghaengbok_db_admin', 'BOOMbitchgetouttheway', 'saranghaengbok_db');
+    $conn = new mysqli('db-php-app', 'saranghaengbok_db_admin', 'BOOMbitchgetouttheway', 'saranghaengbok_php');
 
     // Check connection
     if ($conn->connect_error) {