docker-compose wrapper for running commands. Drop this in your bin folder

run.sh

#!/usr/bin/env bash

##
# bin/run
# author: Ian Golden <ian@iangolden.com>
# 
#
# Simple bash script to wrap the docker-compose run
# prefix for running commands in a dockerized rails
# setup. prefixes with docker-compose run bundle 
# exec $@
#
# @option -a <SERVICE_NAME>   specify service name
# @option -e <RAILS_ENV>      specify RAILS_ENV
# @option -c                  clean command no prefix 
# @option -h                  display usage screen 
#
#
# bin/run <commands>
# bin/run rake db:migrate
# bin/run rails c
# bin/run -a postgres echo "hi from postgres"
# bin/run -e test -a postgres echo "test + postgres"
#
# Gotcha: -e must preceed -a option
# Gotcha: -c must preceed -a option
#====================================================


set -e

YELLOW='\033[0;33m'
GREEN='\033[1;32m'
ENDC='\033[0m'

SERVICE_NAME=app
__RAILS_ENV=development

function usage {
  USAGE=$(cat <<EOF
bin/run 

Wrapper command for 'docker-compose run <service>'

Usage:
========================

bin/run rails c
bin/run rake db:migrate
bin/run -c -a app cat /etc/hosts 
bin/run -e test -a rails c
bin/run -a postgres echo "hi from postgres"
EOF
)
echo "$USAGE"
}

# Runs w/ prefixes:
# docker-compose run app RAILS_ENV=development bundle exec <commands>
function run_rails {
    # did they spec env?
    if [ "$1" == "-e" ]; then
      shift
      # set env
      __RAILS_ENV=$1
      shift
    fi
    # did specify service name?
    if [ "$1" == "-a" ]; then
      # check not null
      if [ -n "$2" ]; then
        # set service name
        SERVICE_NAME=$2
        shift && shift
        echo -e "\n\n${GREEN}Running${ENDC} ==> ${YELLOW}docker-compose run $SERVICE_NAME RAILS_ENV=${__RAILS_ENV} bundle exec $@${ENDC}\n\n"
        docker-compose run $SERVICE_NAME $@
      else
        usage
      fi
    elif [ "$1" == "-h" ]; then
      usage
    elif [ -n "$1" ]; then
      echo -e "\n\n${GREEN}Running${ENDC} ==> ${YELLOW}docker-compose run app RAILS_ENV=${__RAILS_ENV} bundle exec $@${ENDC}\n\n"
      docker-compose run app $@
    else
      usage
    fi
}

# Runs w/o rails command prefixes:
# docker-compose run app <commands>
function run_clean {
      if [ "$1" == "-a" ]; then
        # set service name
        SERVICE_NAME=$2
        shift && shift
        echo -e "\n\n${GREEN}Running${ENDC} ==> ${YELLOW}docker-compose run $SERVICE_NAME $@${ENDC}\n\n"
        docker-compose run $SERVICE_NAME $@
      else
        echo -e "You need to specify a specific service when running clean commands"
        usage
      fi

}

function run {
  # if options present continue, else display usage
  if [ $1 ]; then
    # handle clean run
    if [ "$1" == "-c" ]; then
      shift
      run_clean $@
    else
      run_rails $@
    fi
  else
    # check usage
    usage
  fi
}

run $@