docker database use volumes

.gitignore

@@ -17,3 +17,4 @@ conf/app.ini
 .idea/*
 main
 runtime/*
+data/docker-postgres/*

README.md

@@ -9,12 +9,12 @@ game_demo/
 └── runtime # 应用运行时数据
 ```
 
-### Run Server
+### Run Server By Docker
 #### Before
 cp app.ini.local app.ini
-
+mkdir -p data/docker-postgres
 ```shell script
-docker run --name postgres -p 5433:5432 -e POSTGRES_PASSWORD=123456 -d postgres
+docker run --name postgres -p 5433:5432 -e POSTGRES_PASSWORD=123456 -v $GOPATH/src/game_demo/data/docker-postgres:/var/lib/postgresql/data -d postgres
 CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main .
 docker build -t game_demo_scratch .
 docker run --link postgres:postgres -p 8000:8000 game_demo_scratch