Add install-docker.sh
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install-docker.sh
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install-docker.sh
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#!/bin/bash
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# Script to install Docker on Ubuntu 24.04
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# Must be run with root privileges
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# Error handling
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set -e
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trap 'echo "Error on line $LINENO. Exit code: $?"' ERR
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# Utility functions
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log_message() {
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1"
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}
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is_step_completed() {
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[ -f "/var/log/docker_install/$1" ]
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}
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save_checkpoint() {
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mkdir -p /var/log/docker_install
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touch "/var/log/docker_install/$1"
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}
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# Check if script is run as root
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if [ "$EUID" -ne 0 ]; then
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echo "Please run as root"
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exit 1
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fi
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# Check Ubuntu version
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if ! grep -q "Ubuntu 24.04" /etc/os-release; then
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log_message "Warning: This script is designed for Ubuntu 24.04. Your version may differ."
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read -p "Do you want to continue? (y/N) " -n 1 -r
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echo
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if [[ ! $REPLY =~ ^[Yy]$ ]]; then
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exit 1
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fi
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fi
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# Remove old versions if exist
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if ! is_step_completed "old_versions_removed"; then
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log_message "Removing old Docker versions if they exist..."
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for pkg in docker.io docker-doc docker-compose docker-compose-v2 podman-docker containerd runc; do
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apt-get remove -y $pkg >/dev/null 2>&1 || true
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done
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save_checkpoint "old_versions_removed"
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fi
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# Install prerequisites
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if ! is_step_completed "prerequisites_installed"; then
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log_message "Installing prerequisites..."
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apt-get update
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apt-get install -y \
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ca-certificates \
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curl \
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gnupg \
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lsb-release
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save_checkpoint "prerequisites_installed"
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fi
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# Install Docker
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if ! is_step_completed "docker_installed"; then
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log_message "Installing Docker..."
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install -m 0755 -d /etc/apt/keyrings
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curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
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chmod a+r /etc/apt/keyrings/docker.asc
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echo \
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"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
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$(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
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tee /etc/apt/sources.list.d/docker.list > /dev/null
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apt-get update
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apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
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# Create docker user if not exists
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if ! id "dockeruser" &>/dev/null; then
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useradd -m -s /bin/bash dockeruser
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usermod -aG docker dockeruser
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fi
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save_checkpoint "docker_installed"
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fi
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# Verify installation
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if ! is_step_completed "installation_verified"; then
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log_message "Verifying Docker installation..."
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if ! docker run hello-world > /dev/null; then
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log_message "Error: Docker installation verification failed"
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exit 1
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fi
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save_checkpoint "installation_verified"
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fi
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# Configure Docker to start on boot
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if ! is_step_completed "docker_configured"; then
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log_message "Configuring Docker..."
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systemctl enable docker.service
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systemctl enable containerd.service
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save_checkpoint "docker_configured"
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fi
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# Set up Docker daemon configuration
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if ! is_step_completed "daemon_configured"; then
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log_message "Setting up Docker daemon configuration..."
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mkdir -p /etc/docker
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cat > /etc/docker/daemon.json <<EOF
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{
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"log-driver": "json-file",
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"log-opts": {
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"max-size": "100m",
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"max-file": "3"
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},
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"default-address-pools": [
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{
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"base": "172.17.0.0/16",
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"size": 24
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}
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]
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}
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EOF
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save_checkpoint "daemon_configured"
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fi
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# Restart Docker to apply changes
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if ! is_step_completed "final_restart"; then
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log_message "Restarting Docker service..."
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systemctl restart docker
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save_checkpoint "final_restart"
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fi
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log_message "Docker installation completed successfully!"
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log_message "Docker version: $(docker --version)"
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log_message "Docker Compose version: $(docker compose version)"
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log_message "Docker user 'dockeruser' has been created and added to the docker group"
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log_message "You may need to log out and back in for group changes to take effect"
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