Install Docker on Ubuntu · Knowledge & Memory Center

Steps

STEP 1 OF 6

Remove old or conflicting packages (docker.io, podman-docker, containerd)

Commands

Ubuntu 22.04 / 24.04

SHELL

1# 1. Remove conflicting packages

2for p in docker.io docker-compose podman-docker containerd runc; do sudo apt-get remove -y $p; done

3

4# 2. Repository

5sudo apt-get update && sudo apt-get install -y ca-certificates curl

6sudo install -m 0755 -d /etc/apt/keyrings

7sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc

8echo "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

9

10# 3. Install

11sudo apt-get update

12sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

13

14# 4. Service

15sudo systemctl enable --now docker

16

17# 5. Run without sudo

18sudo usermod -aG docker $USER && newgrp docker

19

20# 6. Verify

21docker version && docker compose version

22docker run --rm hello-world

Tip

Quick option for throwaway VMs: curl -fsSL https://get.docker.com | sh. On macOS and Windows install Docker Desktop (or OrbStack / Colima on macOS) instead.

!

The docker group grants root-equivalent access. On shared servers, consider rootless mode (dockerd-rootless-setuptool.sh install).