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Docker Install Guide

Official apt repository method for Debian/Ubuntu VMs. Safe to follow on a fresh machine.

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counter_1 Install Prerequisites

Ensure the system has the packages needed to fetch and verify Docker's apt repository. 

sudo apt-get update
sudo apt-get install -y ca-certificates curl
counter_2 Add Docker's apt Repository

Add Docker's official GPG key and register the stable repository for your Ubuntu release. 

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
counter_3 Install Docker

Update apt with the new repository and install the Docker Engine, CLI, containerd, and Compose plugin. 

sudo apt-get update
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
counter_4 Verify

Confirm Docker is installed and the daemon is running. 

docker --version
sudo systemctl status docker
counter_5 Log In to Harbor Registry

Authenticate Docker with the Harbor registry so this VM can pull Gate images. Credentials are loaded from Settings.

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