install docker

Introduction to Docker

Docker is a powerful platform that allows developers to build, ship, and run applications in containers. These containers are lightweight, portable, and can be deployed consistently across various environments

Installing Docker

To install Docker on Ubuntu run the following script in your termenal:

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

To verify the installation of Docker, run:

docker --version

Adding user to the Docker group

If you’d like to run Docker without sudo, add your user to the Docker group:

sudo usermod -aG docker $USER
su - ${USER}

Installing Docker Compose

Docker Compose is a tool used for defining and managing multi-container Docker applications. To install Docker Compose, run:

sudo apt install -y docker-compose

To verify the installation of Docker Compose, run:

docker-compose --version

Running Portainer

Portainer is a simple, easy-to-use GUI for managing Docker containers. You can run Portainer as a Docker container by executing the following commands:

docker volume create portainer_data
docker run -d -p 8000:8000 -p 9443:9443 --name portainer --restart=always -v /var/run/docker.sock:/var/run/docker.sock -v portainer_data:/data portainer/portainer-ce:latest

After running the above command, you can access Portainer at: https://127.0.0.1:9443

Troubleshooting

• If you face any issues starting Docker after installation, ensure that the Docker service is running:

  sudo systemctl start docker
  

• To enable Docker to start on boot:

  sudo systemctl enable docker