How to Install Docker on Ubuntu - Hakkinex.(💡|🧠)

How to Install Docker on Ubuntu Using the Official Recommended Method#

Remove Old Versions of Docker#

To avoid conflicts with the previous version, it is recommended to remove any old installations of Docker.

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

Manually check to ensure that the old Docker has been completely removed.

sudo rm -rf /var/lib/docker
sudo rm -rf /var/lib/containerd

Install Using apt-get#

Set Up the Repository#

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl gnupg
sudo install -m 0755 -d /etc/apt/keyrings
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
sudo chmod a+r /etc/apt/keyrings/docker.gpg

# Add the repository to Apt sources:
echo \
  "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
  "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

Install Docker Engine#

Install via apt-get.

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

Verify if the installation was successful.

sudo docker run hello-world