LXC: Installing Docker on a Debian CT

A quick guide to getting docker running on a Debian CT. Everything in this guide can be completed quickly by running this curl/sudo-bash script from my gist.

curl -s https://gist.githubusercontent.com/binarypatrick/1e9fcb79eec72fd82bde63a08b47a535/raw | sudo bash

Installing Docker

Then you’ll need to login and install docker.

sudo apt update && sudo apt install docker.io docker-compose -y && sudo systemctl enable docker

Then start and confirm the service

sudo systemctl start docker && sudo systemctl status docker

Now check to make sure v2 is installed

docker version
docker compose version

To ensure Docker is running correctly you can try to run a simple hello-world container

sudo docker run hello-world

Run Docker from a non-root user without sudo

sudo usermod -aG docker $USER

Installing Lazydocker

Lazydocker is basically a CLI portainer. Rather than running a service for a single container running in LXC. I like to install lazy docker to manage things. Install is easy by using the script they provide, but I prefer to run my own.

#!/bin/bash

# allow specifying different destination directory
DIR="/usr/local/bin"

# map different architecture variations to the available binaries
ARCH=$(uname -m)
case $ARCH in
    i386|i686) ARCH=x86 ;;
    armv6*) ARCH=armv6 ;;
    armv7*) ARCH=armv7 ;;
    aarch64*) ARCH=arm64 ;;
esac

# prepare the download URL
GITHUB_LATEST_VERSION=$(curl -L -s -H 'Accept: application/json' https://github.com/jesseduffield/lazydocker/releases/latest | sed -e 's/.*"tag_name":"\([^"]*\)".*/\1/')
GITHUB_FILE="lazydocker_${GITHUB_LATEST_VERSION//v/}_$(uname -s)_${ARCH}.tar.gz"
GITHUB_URL="https://github.com/jesseduffield/lazydocker/releases/download/${GITHUB_LATEST_VERSION}/${GITHUB_FILE}"

# install/update the local binary
curl -L -o lazydocker.tar.gz $GITHUB_URL
tar xzvf lazydocker.tar.gz lazydocker
install -Dm 755 lazydocker -t "$DIR"
rm lazydocker lazydocker.tar.gz

Now you can simply run it with the following command.

lazydocker