Docker Setup & Usage Documentation

1. Update Existing Packages

sudo apt update
sudo apt upgrade -y

2. Install Required Dependencies

sudo apt install apt-transport-https ca-certificates curl software-properties-common lsb-release -y

3. Add Docker’s Official GPG Key

curl -fsSL <https://download.docker.com/linux/ubuntu/gpg> | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg

4. Add Docker Repository

echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] \
  <https://download.docker.com/linux/ubuntu> \
  $(lsb_release -cs) stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

5. Install Docker Engine

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

6. Verify Docker Installation

sudo systemctl status docker

7. Run Docker Without Sudo