How to Install Docker on Your Linux VPS

Docker allows you to run applications in isolated containers.

Install Docker

1. Update system
   First, update the package lists:

   sudo apt update
   

2. Install dependencies
   Install the required packages:

   sudo apt install ca-certificates curl gnupg -y
   

3. Add GPG key
   Add the official Docker 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.gpg
   

4. Add repository
   Add the official 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/null
   

5. Install Docker
   Update the package lists and install Docker:

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

6. Verify installation
   Check if Docker was installed correctly:

   sudo docker run hello-world
   

   If the installation was successful, a confirmation message will be displayed.

Useful commands