docker.bash

#!/bin/bash

if ! command -v docker &> /dev/null; then
    sudo apt-get install ca-certificates curl gnupg lsb-release -y
    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-get update
    sudo apt-get install docker-ce docker-ce-cli containerd.io -y
    sudo docker run hello-world

    sudo groupadd docker
    sudo usermod -aG docker $USER

    echo
    echo "Now re-login / restart the pc; Otherwise docker will not work with non-root users."
else
    echo "Docker is already installed."
fi