Start docker daemon if it's not already when docker-compose up is ran

docker.zsh

#!/bin/bash

# spinner
# @see https://stackoverflow.com/questions/238073/how-to-add-a-progress-bar-to-a-shell-script
sp="/-\|"
sc=0
spin() {
   printf "\b${sp:sc++:1}"
   ((sc==${#sp})) && sc=0
}
endspin() {
   printf "\r%s\n" "$@"
}

# Check if Docker is running, if not, launch and wait for ready
startdocker() {
  if ! docker system info; then
    echo -e "\e[36mLaunching Docker…\e[0m";
    open --background -a Docker;

    while ! docker system info > /dev/null 2>&1;
      spin
      do sleep 1;
    done
    endspin
  fi
}

# Start project
up() {
  startdocker;
  if [[ -n $1 ]]; then
      cd $SITES/$1 || return;
  fi
  docker-compose up -d;
}

down() {
  if [[ -n $1 ]]; then
        cd $SITES/$1 || return;
  fi
  docker-compose down;
}

restart() {
  if [[ -n $1 ]]; then
        cd $SITES/$1 || return;
  fi
  docker-compose restart;
}