Install Docker Engine on Ubuntu

Nov 3, 2024

Docker

Before you install Docker Engine for the first time on a new host machine, you need to set up the Docker repository. Afterward, you can install and update Docker from the repository.

  1. Set up Docker's apt repository.
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update
  1. Install the Docker packages.
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
  1. Create the docker group if it does not exist.
sudo groupadd docker
  1. Add the current user to the docker group.
sudo usermod -aG docker $USER
  1. Log out and log back in to take effect.
newgrp docker
  1. Check if docker can be run without root.
docker run hello-world
  1. If still permission denied, run the following command.
sudo chmod 666 /var/run/docker.sock

That's it! You are now ready to use Docker Engine on Ubuntu.

Masred