hack: fix connection failure beteween containers on github actions

ref: myoung34/docker-github-actions-runner#199

docker-compose.yml

@@ -12,7 +12,8 @@ services:
       - storage_app:/var/lib/mysql
       - ./webapp:/home/ishocon/webapp
     ports:
-      - "443:443"
+      # hack to avoid connection failure on github actions
+      - "172.17.0.1:443:443"
 
   bench:
     image: showwin/ishocon2_bench:latest