# Install Docker + Compose plugin if missing
if ! command -v docker >/dev/null || ! docker compose version >/dev/null 2>&1; then
    echo -e "${YELLOW}Installing Docker & Compose plugin ...${NC}"
    apt-get update -qq
    apt-get install -yqq ca-certificates curl gnupg lsb-release
    curl -fsSL https://download.docker.com/linux/ubuntu/gpg | gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
    echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | tee /etc/apt/sources.list.d/docker.list >/dev/null
    apt-get update -qq
    apt-get install -yqq docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
    systemctl enable --now docker
    echo -e "${GREEN}Docker installed${NC}"
fi