bootstrap a new Rails app in Docker from boot2docker

bootstrap_rails.sh

#!/bin/sh

# comment by @mazzolino https://registry.hub.docker.com/_/rails/
# switch to pinned version of Rails, latest was broken

USAGE="Usage: $0 <your app name>"
TAG="4.2"

if [ "$#" -eq 0 ]; then
	echo "$USAGE"
	exit 1
fi

docker run -it -v $(pwd):/usr/src/app -w /usr/src/app rails:"$TAG" rails new "$1"

build_rails_image.sh

#!/bin/sh

USAGE="Usage: $0 <your app name>"

if [ "$#" -eq 0 ]; then
	echo "$USAGE"
	exit 1
fi

cp Dockerfile "$1"
cd "$1"
docker build -t "$1" .

Dockerfile

FROM rails:onbuild

enter_rails_container.sh

#!/bin/sh

USAGE="Usage: $0 <your app name>"

if [ "$#" -eq 0 ]; then
	echo "$USAGE"
	exit 1
fi

docker exec -it "$1"-container /bin/bash

run_rails_app.sh

#!/bin/sh

USAGE="Usage: $0 <your app name>"

if [ "$#" -eq 0 ]; then
	echo "$USAGE"
	exit 1
fi

docker run --name "$1"-container -p 8080:3000 -v $(pwd):/usr/src/app -w /usr/src/app -d "$1"