Setting Up Docker on Proxmox

Option 1: Running Docker in a Linux VM (Best Practice)

This approach is recommended for full compatibility and security, as Docker and Proxmox kernels may conflict.

1. Create a Linux VM

• In Proxmox, create a new virtual machine.
• Choose a lightweight Linux distribution such as Ubuntu Server or Debian.
• Allocate resources (e.g., CPUs, RAM, and storage) based on your expected Docker workload.

2. Install Docker in the VM

1. Update the system:

   sudo apt update && sudo apt upgrade -y

2. Install Docker:

   sudo apt install -y apt-transport-https ca-certificates curl software-properties-common
   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
   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
   sudo apt update
   sudo apt install -y docker-ce docker-ce-cli containerd.io

3. Verify the installation:

   docker --version

4. (Optional) Add your user to the Docker group:

   sudo usermod -aG docker $USER

5. Install Docker Compose:

   sudo apt install docker-compose

Key Benefits of Option 1

• Compatibility: Ensures compatibility with all Docker features.
• Security: Isolates Docker workloads from the Proxmox host.
• Flexibility: Allows for easier updates and management.