Build and install Docker master on an Ubuntu cloud VM

dockerdev.sh

#!/bin/sh -e
# Build and install latest Docker dev version on an Ubuntu cloud VM

install() {
  echo Installing
  service docker stop || true
  cp -av bundles/latest/binary-daemon/* /usr/bin
  cp -av bundles/latest/binary-client/* /usr/bin
  service docker start
}

init() {
  echo Initialising from fresh boot
  apt-get update
  apt-get -y install build-essential
  curl -sSL https://get.docker.com/ | sh
  git clone git://github.com/docker/docker /root/docker
  fallocate -l 2G /swapfile
  chmod 600 /swapfile
  mkswap /swapfile
  swapon /swapfile
  echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
}

build() {
  cd /root/docker
  git pull
  make
}

cmd=$1

case $cmd in
install) install ;;
init) init ;;
build) build ;;
*) echo "Usage: $0 [init|build|install]" ;;
esac