Setup docker on Cent-OS Script Removal/Reinstall

setup_docker_centos.sh

#!/bin/bash

# Stop Docker if exist
sudo systemctl stop docker

# Remove Docker Packages
sudo yum remove docker-ce docker-ce-cli containerd.io

# Remove Docker Data (Optional)
sudo rm -rf /var/lib/docker

# Remove Docker Dependencies (Optional)
sudo yum autoremove

# Remove Docker User Group (Optional)
sudo groupdel docker

# Remove Docker Repository (Optional)
sudo rm -rf /etc/yum.repos.d/docker*.repo

echo "Docker has been removed from the system."

# Ensure the script is run as root
if [ "$(id -u)" != "0" ]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi

# Stop any running Docker processes
sudo systemctl stop docker

# Remove the previous Docker installation
sudo yum remove -y docker \
                  docker-client \
                  docker-client-latest \
                  docker-common \
                  docker-latest \
                  docker-latest-logrotate \
                  docker-logrotate \
                  docker-engine

# Set up the repository
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

# Install Docker Engine
sudo yum install -y docker-ce docker-ce-cli containerd.io

# Handle the Docker service
sudo systemctl start docker
sudo systemctl enable docker
sudo systemctl is-active --quiet docker && echo "Docker is running."

# Check if Docker group exists, add if it doesn't
if ! getent group docker > /dev/null 2>&1; then
  sudo groupadd docker
fi

# Add the current user to the Docker group, if not already added
if ! groups $USER | grep &>/dev/null '\bdocker\b'; then
  sudo usermod -aG docker $USER
fi

# Set permissions for Docker socket
sudo chown "$USER":docker /var/run/docker.sock
sudo chmod 660 /var/run/docker.sock

# Install the latest version of Docker Compose
sudo yum install -y yum-utils
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install docker-ce docker-ce-cli containerd.io
sudo systemctl start docker
sudo systemctl enable docker

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

# Verify installation
docker-compose --version

# Feedback
echo "Docker and Docker Compose have been installed and started."

# Post-installation message
echo "Please log out and back in to ensure your user is properly set up with Docker group permissions."