diff --git a/.gitignore b/.gitignore
index a3d3cd1..a97028a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,4 @@
-*/**/*.yml
-conf.yml*
+conf.yml
 *.out
 */**/main
 main
diff --git a/aux/compose.mysql.yml b/aux/compose.mysql.yml
new file mode 100644
index 0000000..c640fa0
--- /dev/null
+++ b/aux/compose.mysql.yml
@@ -0,0 +1,15 @@
+version: '3.3'
+services:
+  mysql:
+    image: 'mysql:5.7'
+    environment:
+      MYSQL_ALLOW_EMPTY_PASSWORD: 1
+      TZ: Asia/shanghai
+    command:
+      [
+        '--character-set-server=utf8mb4',
+        '--collation-server=utf8mb4_unicode_ci',
+        '--default-time-zone=+8:00',
+      ]
+    ports:
+      - '3306:3306'