Adds README for docker

- adds secrets environment for development docker
- adds docker db config as basis

README.md

@@ -96,6 +96,19 @@ If you are new to Rails, follow the [RailsBridge Installfest instructions](http:
       Client Secret from your Github application
     * Don't forget to restart your Rails server so it can see your shiny new GitHub key & secret
 
+#### Docker setup
+
+1. Install docker and docker compose
+
+1. build 
+  docker-compose build
+
+1. build 
+  docker-compose run --rm app bash -c bundle
+
+1. setup DB
+  docker-compose run --rm app bundle exec rake db:setup
+
 ### Tests
 
 Tests, also known as specs, are great! Adding tests is a great pull request all on its own. Please try to write tests when you add or change functionality. 

config/database.docker.yml

@@ -0,0 +1,19 @@
+development:
+  adapter:  postgresql
+  host:    db 
+  encoding: unicode
+  database: doubleunion_development
+  pool:     5
+  username: postgres
+  password: password
+  template: template0
+
+test: &test
+  adapter:  postgresql
+  host:    db 
+  encoding: unicode
+  database: doubleunion_test
+  pool:     5
+  username: postgres
+  password: password
+  template: template0

docker-compose.yml

@@ -25,6 +25,7 @@ services:
       - PSQL_USERNAME=postgres
       - PSQL_PASSWORD=password
       - PSQL_HOST=db
+      - SECRET_TOKEN=development
     tty: true
     stdin_open: true