Install Docker on Ubuntu

docker ubuntu

There are 2 ways to install docker on ubuntu.

Install docker with snap

Docker from snap is very easy. It is also install docker-compose at the same time. The folder will be /snap/docker.

sudo snap install docker

# update docker
# sudo snap refresh docker # the version 20.10.24 has an issue that reports 'http: invalid Host header'
# sudo snap refresh docker --channel=core18/stable

There is no docker group created during installation. If you want to use docker as regular user, you need to add the account to docker group.

      sudo addgroup --system docker
      sudo adduser $USER docker
      newgrp docker
      sudo snap disable docker
      sudo snap enable docker

Install docker manual for official repository

• Install basic tool.

sudo apt-get update

 sudo apt-get install \
 ca-certificates \
 curl \
 gnupg \
  lsb-release

• Add Docker’s offical GPG key:

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg \
--dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

• Install the docker repository.

echo \
"deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu \
$(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

• Install docker

sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io

• Test docker container

docker run -it ubuntu echo Hello docker!

• Install Docker-compose

sudo curl -SL https://github.com/docker/compose/releases/download/v2.23.0/docker-compose-linux-x86_64 -o /usr/bin/docker-compose
sudo chmod +x /usr/bin/docker-compose

• Verify Docker-compose

docker-compose version

If you want to run docker in lxd, please refer Enalbe docker in LXD5

Written on November 7, 2023