Bash script that installs docker, docker-compose, kubectl and enables docker on startup

docker-install.sh

#!/bin/bash

#package manager and install some prerequisites (all of these aren't technically required)
sudo apt-get update
sudo apt-get install -y apt-transport-https ca-certificates curl software-properties-common libssl-dev libffi-dev git wget nano

# create a group named docker and add yourself to it
#   so that we don't have to type sudo docker every time
#   note you will need to logout and login before this takes affect (which we do later)
sudo groupadd docker
sudo usermod -aG docker ${USER}

# add Docker key and repo
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"

# (optional) add kubectl key and repo
curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee /etc/apt/sources.list.d/kubernetes.list

# update the package manager with the new repos
sudo apt-get update

# upgrade the distro
sudo apt-get upgrade -y
sudo apt-get autoremove -y

# install docker
sudo apt-get install -y docker-ce containerd.io

# (optional) install kubectl
sudo apt-get install -y kubectl

# (optional) install latest version of docker compose
sudo curl -L "https://github.com/docker/compose/releases/download/1.26.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose && sudo chmod +x /usr/local/bin/docker-compose

# enable docker on startup
sudo systemctl enable docker