Install docker on Ubuntu

install.sh

#!/bin/sh

# Setup apt's repository.
# -----------------------

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get -y install ca-certificates curl
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

# Add the repository to Apt sources:
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
sudo apt-get update


# Install the Docker packages.
# ----------------------------
sudo apt-get -y install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin


# Add user into docker group.
# ---------------------------
sudo groupadd docker
sudo usermod -aG docker $USER
groups $USER # verify that the user is in the docker group
newgrp docker # activate the changes to groups


# Start and enable the Docker service.
# -------------------------------------
sudo service docker start
sudo service docker enable
sudo service docker restart
# sudo service docker status


# Verify that Docker is installed correctly.
# ------------------------------------------
docker run hello-world