# how to run

## make project

```
$ docker run --rm rails:4.2.5 rails new . -d mysql
$ git init
$ git add .
$ git commit -m 'initial revision'
$ cat docker-compose.yml
app:
    build: .
    volumes:
        - .:/usr/src/app
    ports:
        - 3000:3000
    links:
        - db
    env_file:
        - local.env
db:
    image: mysql:5.7.10
    env_file:
        - local.env
$ cat Dockerfile
FROM rails:onbuild
$ cat local.env
MYSQL_ROOT_PASSWORD=my-secret-pw
$ vi .gitignore
$ vi config/database.yml
$ git diff
diff --git a/.gitignore b/.gitignore
index 5b61ab0..748f216 100644
--- a/.gitignore
+++ b/.gitignore
@@ -11,3 +11,6 @@
 /log/*
 !/log/.keep
 /tmp
+
+# Ignore docker config
+/local.env
diff --git a/config/database.yml b/config/database.yml
index d709096..1f68536 100644
--- a/config/database.yml
+++ b/config/database.yml
@@ -14,8 +14,8 @@ default: &default
   encoding: utf8
   pool: 5
   username: root
-  password:
-  host: localhost
+  password: <%= ENV['MYSQL_ROOT_PASSWORD'] %>
+  host: db

 development:
   <<: *default
$ git add .
$ git commit -m 'append docker config files'
$ docker-compose run --rm app rake db:create
$ docker-compose up
```

## make controller

```
$ docker-compose run --rm app rails generate controller <controller name> <actions...>
```

## db setting

```
```

## make model

```
$ docker-compose run --rm app rails generate model <model name> <columns...>
$ docker-compose run --rm app rake db:migrate
```