Docker

Old Docker Versions

Older versions of the Docker binary were called docker or docker-engine or docker-io

If you already installed this version you can uninstall it via:

sudo apt-get remove docker docker-engine docker.io containerd runc

Docker itself already provides a very good script:

curl -fsSL https://get.docker.com | sudo bash

Finally, you need to install Docker Compose:

sudo curl -L -o /usr/local/bin/docker-compose \
  "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)"
sudo chmod +x /usr/local/bin/docker-compose

On an ARM Maschine you need:

pip install docker-compose

Instead of typing sudo docker-compose up -d all the time you can use this alias and type dc up -d:

echo 'alias dc="sudo docker-compose "' >> ~/.bashrc

Parts of the PostInstall script covered in this chapter

#!/bin/bash

function install_docker_compose() {
  curl -L "https://github.com/docker/compose/releases/download/latest/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
  chmod +x /usr/local/bin/docker-compose
}

function docker_network_create() {
  name=${1}
  subnet=${2}
  docker network inspect ${name} >/dev/null 2>&1 || \
  docker network create --subnet ${subnet} ${name}
}

# install docker if not already installed
if [[ -z $(which docker) ]]; then
  if [[ -z $(which curl) ]]; then
    apt-get install curl
  fi
  curl https://get.docker.com | bash
fi

# install docker-compose if not already installed
if [[ -z $(which docker-compose) ]]; then
  install_docker_compose
fi

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Last update: 2022-01-09