Files to dockerizing a rails app, for development and production. It use puma as rails web server. The rails app contains:

• Development: web and db(postgresql) container
• Production: web, db(postgresql), reverse proxy(nginx) and postgresql backups containers. Backups are stored in S3 and performed daily at 3am.

Copy these files into your rails app directory:

• Dockerfile
• docker-compose.yml
• production.yml
• docker.sh

Copy the directory puma/ inside your rails app/config directory.

Run de script:

docker.sh -a

This script create a virtual machine in Virtualbox with docker installed, foward the ports 3000(puma), 5432(postgresql) with the host machine, bind the docker machine to the actual shell and run the docker containers for development(web and db containers).

Create docker machine in virtualbox:

docker-machine create --driver virtualbox docker-dev

Stop machine add port forwading to Virtualbox and start machine again

docker-machine stop docker-dev
VBoxManage modifyvm "docker-dev" --natpf1 "tcp-port3000,tcp,,3000,,3000";
VBoxManage modifyvm "docker-dev" --natpf1 "tcp-port5432,tcp,,5432,,5432";
docker-machine start docker-dev

Bind machine to the actual shell

eval "$(docker-machine env docker-dev)"

Build the containers

docker-compose build

Run the web container

docker-compose run --service-ports web

The --service-ports option permits to use rails debuggers as byebug or pry. Migrate database

docker-compose run web rake db:migrate

Create ec2 machine

docker-machine create --driver amazonec2 --amazonec2-access-key "your_access_key" --amazonec2-secret-key "your_secret_key" --amazonec2-region eu-west-1 aws-sandbox

• aws-sandbox: in the name of the machine, replace it for the name that you need.
• --amazonec2-region eu-west-1: Specify your region. Build containers

docker-compose -f docker-compose.yml -f production.yml build

Run containers

docker-compose -f docker-compose.yml -f production.yml up -d

Migrate database

docker-compose -f docker-compose.yml -f production.yml run web rake db:migrate

docker-compose -f docker-compose.yml -f production.yml buld web
docker-compose up --no-deps -d web

#### TIPS Remove unused images

docker rmi -f $(docker images | grep "<none>" | awk "{print \$3}")

Remove exited containers

docker rm `docker ps -a | grep Exited | awk '{print $1 }'`