Pass variable in .env file to the container and create bin/drun helpe…

…r script

This helper script can be used to run commands inside the container
which runs the rails server.

Example usage:
bin/drun bin/rails c          # Starts the rails console inside the container
bin/drun bin/rake db:migrate  # Runs migrations
bin/drun bash                 # Starts a bash shell inside the container

bin/drun

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+docker exec -it $(docker ps | grep testributor-development-katana | awk '{print $1}') $@

development-docker-compose.yml

@@ -20,6 +20,8 @@ services:
       RAILS_ENV: development
       SECRET_KEY_BASE: e9744e038fb87c6bfb52d5aa0f2f1a865fbd242a6ce162cb6e5cae9e5e90c558c32f369d3d68ea0ae5325916fb55507a164011964edc4ac2bf1a31a0573efe73
       REDIS_URL: redis://redis:6379
+    env_file:
+      - .env
     ports:
       - "3000:3000"
   postgres: