How to Install Docker on Ubuntu
This guide walks you through installing Docker Engine on Ubuntu (22.04 / 24.04) from Docker’s official repository, which keeps you on the latest stable release.
1. Update the system and install prerequisites
sudo apt update
sudo apt install -y ca-certificates curl gnupg2. Add Docker’s official GPG key
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.gpg3. Add the Docker repository
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/null4. Install Docker Engine
sudo apt update
sudo apt install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin5. Enable and verify
sudo systemctl enable --now docker
sudo docker run hello-world6. Run Docker without sudo (optional)
Add your user to the docker group, then log out and back in:
sudo usermod -aG docker $USERVerify the version any time with docker --version and docker compose version.
