Inspired by this article from Alex I also set out to remove always running Docker daemon from the background while ensuring it is available whenever I need it on running docker or docker-compose commands.

I created 2 scripts and put them on my path before the actual docker and docker-compose binaries. For an explanation of the scripts I suggest you read Alex’s article linked above.

#!/usr/bin/env bash

set -o errexit
set -o nounset

is_docker_running() {
  if /usr/local/bin/docker info > /dev/null 2>&1; then
    return 0
  else
    return 1
  fi
}

if ! is_docker_running; then
  echo "Starting Docker..."
  open /Applications/Docker.app

  for i in $(seq 60)
  do
    if is_docker_running; then
      break
    fi
    sleep 1
  done
fi

/usr/local/bin/docker "$@"

I named the above file docker, gave it executable permissions and did a similar thing for docker-compose

#!/usr/bin/env bash

set -o errexit
set -o nounset

is_docker_running() {
  if /usr/local/bin/docker info > /dev/null 2>&1; then
    return 0
  else
    return 1
  fi
}

if ! is_docker_running; then
  echo "Starting Docker..."
  open /Applications/Docker.app

  for i in $(seq 60)
  do
    if is_docker_running; then
      break
    fi
    sleep 1
  done
fi

/usr/local/bin/docker-compose "$@"

Thanks again to Alex for the inspiration.