Docker

gistfile1.txt

Steps

1. mix release.init
2. Create config/releases.exs

```
import Config

secret_key_base = System.fetch_env!("SECRET_KEY_BASE")
app_port = System.fetch_env!("APP_PORT")
app_hostname = System.fetch_env!("APP_HOSTNAME")
db_user = System.fetch_env!("DB_USER")
db_password = System.fetch_env!("DB_PASSWORD")
db_host = System.fetch_env!("DB_HOST")

config :demo, DemoWeb.Endpoint,
  http: [:inet6, port: String.to_integer(app_port)],
  secret_key_base: secret_key_base

config :demo,
  app_port: app_port

config :demo,
  app_hostname: app_hostname

# Configure your database
config :demo, Demo.Repo,
  username: db_user,
  password: db_password,
  database: "demo_prod",
  hostname: db_host,
  pool_size: 10
```

3. Create a .env file

```
APP_PORT=4000
APP_HOSTNAME=localhost
DB_USER=postgres
DB_PASSWORD=pass
DB_HOST=localhost
SECRET_KEY_BASE=Y0uRvErYsecr3TANDL0ngStr1ng
```
4. modify config/prod.ex

```
config :demo, DemoWeb.Endpoint, server: true
```