diff --git a/docker-compose.yml b/docker-compose.yml
index 852124c..a24bf64 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -36,7 +36,7 @@ services:
 
   mysql:
     container_name: mysql
-    image: mysql:5.7.21
+    build: ./mysql
     ports:
       - "3306:3306"
     environment:
diff --git a/mysql/Dockerfile b/mysql/Dockerfile
new file mode 100644
index 0000000..66da0cb
--- /dev/null
+++ b/mysql/Dockerfile
@@ -0,0 +1,2 @@
+FROM mysql:5.7.21
+COPY ./my.cnf /etc/mysql/conf.d/
\ No newline at end of file
diff --git a/mysql/my.cnf b/mysql/my.cnf
new file mode 100644
index 0000000..a27f12c
--- /dev/null
+++ b/mysql/my.cnf
@@ -0,0 +1,9 @@
+[mysql]
+default-character-set=utf8mb4
+
+[mysqld]
+character-set-server=utf8mb4
+collation-server=utf8mb4_bin
+
+[client]
+default-character-set=utf8mb4
\ No newline at end of file