Install Docker on a Ubuntu and configure Docker to run without sudo

install_docker.sh

#!/bin/bash

echo "Updating package index..."
sudo apt-get update

echo "Installing required packages..."
sudo apt-get install -y ca-certificates curl

echo "Setting up Docker's GPG key..."
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

echo "Adding Docker 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

echo "Updating package index again..."
sudo apt-get update

echo "Installing Docker packages..."
sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin

echo "Verifying Docker installation..."
sudo docker run hello-world

echo "Docker installation completed successfully!"

# Step 2: Allowing Docker to be run without sudo (Optional)

# Add the current user to the docker group
sudo usermod -aG docker $USER

# Apply the new group membership
sudo su - $USER

# Confirm group membership
id -nG

# install docker compose
DOCKER_CONFIG=${DOCKER_CONFIG:-$HOME/.docker}
mkdir -p $DOCKER_CONFIG/cli-plugins
curl -SL https://github.com/docker/compose/releases/download/v2.29.0/docker-compose-linux-x86_64 -o $DOCKER_CONFIG/cli-plugins/docker-compose
chmod +x $DOCKER_CONFIG/cli-plugins/docker-compose


# Provide instructions to the user
echo "Docker & Docker Compose is now installed and configured to run without sudo."
echo "Please log out and back in or restart your system for the changes to take effect."