78 lines
2.7 KiB
Bash
Executable File
78 lines
2.7 KiB
Bash
Executable File
#!/bin/bash
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set -euo pipefail
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# Colors for output
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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NC='\033[0m' # No Color
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log_info() { echo -e "${GREEN}[INFO]${NC} $1"; }
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log_warn() { echo -e "${YELLOW}[WARN]${NC} $1"; }
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log_error() { echo -e "${RED}[ERROR]${NC} $1"; exit 1; }
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# Check if running as root
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if [[ $EUID -ne 0 ]]; then
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log_error "This script must be run as root (use sudo)"
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fi
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# 1. Prerequisites
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log_info "Updating package index and installing prerequisites..."
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apt-get update
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apt-get install -y ca-certificates curl gnupg lsb-release
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# 2. Add Docker's official GPG key
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log_info "Adding Docker's official GPG key..."
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install -m 0755 -d /etc/apt/keyrings
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curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg
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chmod a+r /etc/apt/keyrings/docker.gpg
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# 3. Set up the repository
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log_info "Setting up the Docker repository..."
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echo \
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"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
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$(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list > /dev/null
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# 4. Install Docker Engine and CLI
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log_info "Installing Docker Engine, CLI, and Containerd..."
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apt-get update
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apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
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# Note: Docker Compose V2 is now installed as a plugin (docker compose),
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# not the standalone binary (docker-compose).
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# 5. Enable and Start Docker Service
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log_info "Enabling and starting Docker service..."
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systemctl enable docker.service
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systemctl enable containerd.service
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systemctl start docker
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# 6. Add current user to docker group
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# We detect the user running the script (sudo user) or the first non-root user
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CURRENT_USER="${SUDO_USER:-$(whoami)}"
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if id -nG "$CURRENT_USER" | grep -qw "docker"; then
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log_info "User '$CURRENT_USER' is already in the docker group."
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else
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log_info "Adding user '$CURRENT_USER' to the docker group..."
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usermod -aG docker "$CURRENT_USER"
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log_warn "You must log out and log back in (or run 'newgrp docker') for group changes to take effect."
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fi
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# 7. Verification
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log_info "Verifying installation..."
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if docker --version >/dev/null 2>&1; then
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log_info "Docker installed successfully: $(docker --version)"
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else
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log_error "Docker installation verification failed."
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fi
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if docker compose version >/dev/null 2>&1; then
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log_info "Docker Compose Plugin installed successfully: $(docker compose version)"
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else
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log_error "Docker Compose installation verification failed."
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fi
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log_info "Installation complete!"
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log_warn "Remember to run 'sudo usermod -aG docker $CURRENT_USER' if you didn't run as the correct user, and then log out/in."
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