Configure Ubuntu 15.04 for docker-compose and decompose on Vultr.com

vultr-ubuntu-15.04-configure

#!/bin/bash

# To run from shell:
# bash <(curl -sSL https://gist.githubusercontent.com/dmp1ce/84c31085745101f8c241/raw)

do_config() {
  # Make sure to run as root
  user="$(id -un 2>/dev/null || true)"

  if [ "$user" != 'root' ]; then
    echo "Please try again as root"
    return 1
  fi

  # Collect hostname
  echo "Please enter the new hostname for this machine:"
  read new_hostname
  
  # Update system
  apt-get update
  apt-get upgrade

  # Change hostname
  echo "$new_hostname" > /etc/hostname
  hostname $new_hostname
  sed -i "s/install/$new_hostname/" /etc/hosts

  # Install Docker
  curl -sSL https://get.docker.com/ | sh
  
  # Create user based on hostname and Add hostname user to docker group
  useradd -m -G sudo,docker -s /bin/bash $new_hostname
  echo $new_hostname:password | chpasswd

  # Copy ssh authorized_keys to hostname user
  cp -r /home/david/.ssh /home/$new_hostname/
  chown -R $new_hostname:$new_hostname /home/$new_hostname/.ssh/

  # Install Docker compose
  curl -L https://github.com/docker/compose/releases/download/1.4.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
  chmod +x /usr/local/bin/docker-compose
  curl -L https://raw.githubusercontent.com/docker/compose/$(docker-compose --version | awk 'NR==1{print $NF}')/contrib/completion/bash/docker-compose > /etc/bash_completion.d/docker-compose
 
  # Install decompose
  git -C /opt clone --recursive https://github.com/dmp1ce/decompose.git
  ln -s /opt/decompose/decompose /usr/local/bin
  ln -s /opt/decompose/completion/decompose-bash-completion /usr/share/bash-completion/completions/decompose
}

do_config

Thanks.