Install docker using canonical multipass VM in MacOS (an alternative to docker desktop)

install-docker-multipass.sh

NM=$1

function create_setup() {
  cat << EOF > setup-vm.sh
#!/bin/bash
function get_architecture() {
  arch=\$(uname -m)
  if [ \$arch == "x86_64" ]; then
    echo "amd64"
  elif [ \$arch == "aarch64" ]; then
    echo "arm64"
  else
    echo \$arch
  fi
}
sudo apt-get update
sudo apt-get upgrade -y
sudo apt-get -y install apt-transport-https ca-certificates curl gnupg-agent software-properties-common
sudo apt-key fingerprint 0EBFCD88
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=\$(get_architecture)] https://download.docker.com/linux/ubuntu \$(lsb_release -cs) stable"
sudo apt-get update
sudo apt-get upgrade -y
sudo apt-get install -y docker-ce docker-ce-cli containerd.io
sudo groupadd docker
sudo usermod -aG docker ubuntu
sudo systemctl enable docker
EOF
}

function clean_setup() {
  rm -f setup-vm.sh
}

function create_vm() {
  echo "Creating VM $NM"
  multipass launch --name ${NM} -d 32G focal
}

function configure_vm() {
  create_setup
  multipass transfer setup-vm.sh ${NM}:/home/ubuntu/setup-vm.sh
  pk=$(cat ~/.ssh/id_rsa.pub)
  command="echo "$pk" >> /home/ubuntu/.ssh/authorized_keys"
  multipass exec ${NM} -- sh -c ${command}
  clean_setup
}

if [ -z $NM ]; then
  echo "You should specify a name for the VM (e.g. docker)"
  exit 1
fi

if [ -z "$(docker context ls)" ]; then
  echo "You should install docker in your machine"
  echo "e.g. brew install docker"
  exit 1
fi

if [ -z "$(multipass version)" ]; then
  echo "You should install multipass in your machine"
  echo "e.g. brew install --cask multipass"
  exit 1
fi

filter=$(echo "^${NM}")
already_exists=$(multipass list --format csv | tail -n +2 | cut -d ',' -f 1 | grep $filter)
if [ -z $already_exists ]; then
  create_vm
fi

state=$(multipass list --format csv | tail -n +2 | grep $filter | cut -d ',' -f 2)

if [ $state == "Deleted" ]; then
  create_vm
fi

if [ $state == "Stopped" ]; then
  multipass start ${NM}
fi

state=$(multipass list --format csv | tail -n +2 | grep $filter | cut -d ',' -f 2)

if [ $state != "Running" ]; then
  echo "VM is not running"
  exit 1
fi

configure_vm

multipass exec ${NM} -- bash -x /home/ubuntu/setup-vm.sh
already_exists=$(docker context ls | tail -n +2 | cut -d ' ' -f 1 | grep multipass)
if [ -z $already_exists ]; then
  ip=$(multipass list --format csv | tail -n +2 | grep $filter | cut -d ',' -f 3)
  echo "test ssh (accept using id_rsa)"
  ssh ubuntu@${ip} 'echo "ssh ok"'
  echo "Setting up docker context"
  docker context create multipass --docker "host=ssh://ubuntu@${ip}"
  echo "Mounting home in vm"
  multipass mount ~ ${NM}
fi

docker context use multipass