install

 To install Docker Engine on Ubuntu, the recommended approach is to set up Docker's official repository and install the native packages. This ensures you get the latest stable version and security updates. [1, 2]

1. Clear Old Versions

Remove conflicting or older versions before starting: [1, 2]

bash

sudo apt-get remove docker docker-engine docker.io containerd runc

Use code with caution.

2. Set Up the Repository

Install required tools and add Docker's official GPG key to verify packages: [1, 2, 3, 4]

bash

# Update package index
sudo apt-get update

# Install prerequisites
sudo apt-get install ca-certificates curl gnupg -y

# Add the official GPG key
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 \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null

Use code with caution.

3. Install Docker Engine

Update the repository indexes and install Docker alongside Docker Compose: [1, 2, 3, 4]

bash

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