Docker CE setup

Docker and Docker Compose Setup

Uninstall Old Versions

Before installing the latest version of Docker, ensure that any previous versions have been uninstalled:

for pkg in docker.io docker-doc docker-compose podman-docker containerd runc; do sudo apt-get remove $pkg; done

Install Docker Repositories

Update your package list and add the Docker official GPG key:

# Add Docker's official GPG key:
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

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

Install Docker and Docker Compose

Install the Docker CE package, Docker Compose plugin, and other requirements:

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

Add User to the Docker Group

To manage Docker as a non-root user, add your user to the docker group:

sudo groupadd docker
sudo usermod -aG docker $USER

Note: You must log off and back in for the group changes to take effect.

Verify Installation

Run the Hello World Docker container without using sudo:

docker run hello-world

If it runs without errors, the installation was successful.

To list all installed containers, use:

docker ps -a

To stop and remove a container:

docker stop <container_id_or_name>
docker rm <container_id_or_name>