Foreman: Use different Procfile in development and production

Question

I have a homemade Sinatra application for which I intend to use Heroku to host it. I use foreman and shotgun in development, with the following Procfile: ``` web: shotgun config.ru -s thin -o 0.0.0.0 -p $PORT -E $RACK_ENV ``` It works great with both development and production. But the thing is, I don't want to use shotgun in production since it's too slow. Can we use separate Procfile configurations for both dev and prod?

Accepted Answer

You could use two `Procfiles` (e.g. `Procfile` and `Procfile.dev`) and use `foreman`s `-f` option to select a different one to use in dev:

In dev (`Procfile.dev` contains your `shotgun` web process):

```
foreman start -f Procfile.dev
```

In production, `foreman start` will pick up the normal `Procfile`.

Alternatively you could create a `bin` directory in your app with a script to start the appropriate web server depending on `$RACK_ENV` (an idea I found in a comment made by the creator of Foreman, so worth considering).

Foreman: Use different Procfile in development and production

Solution

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