Install docker-compose in your Boot2Docker VM

Since Boot2Docker uses Tiny Core Linux, which runs from RAM, it does not persist filesystem changes by default.
The following commands will download docker-compose and install it in /usr/local/bin at each image start.

Once again, we will modify the /var/lib/boot2docker/bootlocal.sh file :

sudo vi /var/lib/boot2docker/bootlocal.sh

We add the following commands to automatically install docker-compose 1.5.0 :

# install docker-compose
curl -L https://github.com/docker/compose/releases/download/1.5.0/docker-compose-`uname -s`-`uname -m` | \
  sudo tee /usr/local/bin/docker-compose > /dev/null && \
  sudo chmod +x /usr/local/bin/docker-compose