diff --git a/README.md b/README.md
index 3c909d9..baeb02a 100644
--- a/README.md
+++ b/README.md
@@ -7,6 +7,7 @@
 - [tmux](https://github.com/tmux/tmux) - 터미널 멀티플렉서
 - [bottom](https://github.com/ClementTsang/bottom) - 호스트 모니터링
 - [lazygit](https://github.com/jesseduffield/lazygit) - Git 터미널 UI
+- [Docker](https://www.docker.com/) - 컨테이너 플랫폼 (Linux 자동 설치, Mac/Windows는 안내)
 - [ctop](https://github.com/bcicen/ctop) - 컨테이너 모니터링
 - [uv](https://docs.astral.sh/uv/) - Python 패키지 관리자
 - [pi](https://pi.dev/) - CLI AI 코딩 어시스턴트 + 추천 패키지 일괄 설치
@@ -33,6 +34,12 @@ curl -fsSL "https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-bott
 curl -fsSL "https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-lazygit.sh?ref_type=heads" | bash
 ```
 
+**Docker (Linux만 실행 — Mac/Windows 사용자는 아래 안내를 참고하세요):**
+
+```bash
+curl -fsSL "https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-docker.sh?ref_type=heads" | bash
+```
+
 **ctop:**
 
 ```bash
@@ -71,6 +78,8 @@ powershell -ExecutionPolicy Bypass -c "$t=\"$env:TEMP\install-bottom.ps1\"; iwr
 powershell -ExecutionPolicy Bypass -c "$t=\"$env:TEMP\install-lazygit.ps1\"; iwr -useb 'https://gl.isitsoft.kr/publicproj/install-sh/-/raw/main/install-lazygit.ps1' -OutFile $t; & $t"
 ```
 
+**Docker:** [Docker Desktop for Windows](https://www.docker.com/products/docker-desktop/)를 설치하세요. 또는 WSL2에서 리눅스용 `install-docker.sh`를 실행하세요.
+
 **ctop:**
 
 ```powershell
@@ -164,6 +173,27 @@ lazygit
 | `P` `p`         | Push / Pull        |
 | `?`             | 도움말             |
 
+### Docker
+
+컨테이너 플랫폼입니다. `install-docker.sh`는 Linux에 Docker Engine을 자동 설치합니다.
+
+- **컨테이너 실행/관리** — 애플리케이션을 격리된 환경에서 실행
+- **Docker Compose** — 멀티 컨테이너 애플리케이션 오케스트레이션
+- **BuildKit** — 빠른 이미지 빌드
+
+```bash
+docker run hello-world     # 설치 확인
+docker ps                   # 실행 중인 컨테이너 목록
+docker compose up -d        # Compose 서비스 시작
+docker build -t <name> .    # 이미지 빌드
+```
+
+> **macOS 사용자**: [Docker Desktop for Mac](https://www.docker.com/products/docker-desktop/) 또는 [OrbStack](https://orbstack.dev/)을 설치하세요.
+>
+> **Windows 사용자**: [Docker Desktop for Windows](https://www.docker.com/products/docker-desktop/) 또는 WSL2에서 리눅스용 스크립트를 실행하세요.
+>
+> `install-docker.sh`는 Linux 전용입니다. 설치 후 현재 사용자를 `docker` 그룹에 추가하며, 재로그인 후 `docker` 명령어를 sudo 없이 사용할 수 있습니다.
+
 ### ctop
 
 Docker/Podman 컨테이너 모니터링 터미널 UI 도구입니다.
diff --git a/install-docker.sh b/install-docker.sh
new file mode 100755
index 0000000..d9dd6aa
--- /dev/null
+++ b/install-docker.sh
@@ -0,0 +1,185 @@
+#!/usr/bin/env bash
+# shellcheck disable=SC2086
+
+# Installs Docker Engine on Linux, or shows instructions for macOS/Windows.
+# Docker: https://www.docker.com/
+# OrbStack (macOS alternative): https://orbstack.dev/
+#
+# Supported platforms:
+#   Linux (apt) : Ubuntu, Debian, and derivatives — Docker official apt repo
+#   Linux (dnf) : RHEL, Fedora, CentOS Stream, Rocky, Alma — Docker official dnf repo
+#   macOS       : Not supported — shows instructions for OrbStack or Docker Desktop
+#   Windows     : Not supported — use install-docker.ps1 or Docker Desktop
+#
+# Prerequisites:
+#   - Linux: curl, sudo
+#   - macOS/Windows: follow the printed instructions
+
+set -euo pipefail
+
+# ────────────────────────────────────────────
+# Constants
+# ────────────────────────────────────────────
+DOCKER_GPG_URL="https://download.docker.com/linux/ubuntu/gpg"
+DOCKER_APT_REPO_URL="https://download.docker.com/linux/ubuntu"
+DOCKER_DNF_REPO_URL="https://download.docker.com/linux/rhel/docker-ce.repo"
+
+# ────────────────────────────────────────────
+# Utility functions (all stderr output)
+# ────────────────────────────────────────────
+info() { echo "[INFO]  $*" >&2; }
+warn() { echo "[WARN]  $*" >&2; }
+error() {
+	echo "[ERROR] $*" >&2
+	exit 1
+}
+success() { echo "[OK]    $*" >&2; }
+
+# ────────────────────────────────────────────
+# Detect OS
+# ────────────────────────────────────────────
+OS="$(uname -s)"
+
+case "$OS" in
+Linux) ;;
+Darwin)
+	info "macOS detected. Docker Engine is not installed via this script on macOS."
+	info ""
+	info "Please install one of the following:"
+	info ""
+	info "  1. OrbStack (recommended, lightweight):"
+	info "     https://orbstack.dev/"
+	info ""
+	info "  2. Docker Desktop for Mac:"
+	info "     https://www.docker.com/products/docker-desktop/"
+	info ""
+	exit 0
+	;;
+*)
+	info "Unsupported OS: $OS. This script only supports Linux."
+	info ""
+	info "For Windows, install one of the following:"
+	info ""
+	info "  1. Docker Desktop for Windows:"
+	info "     https://www.docker.com/products/docker-desktop/"
+	info ""
+	info "  2. WSL2 with Docker Engine:"
+	info "     Install WSL2, then run this script inside a WSL2 Linux distro."
+	info ""
+	exit 0
+	;;
+esac
+
+ARCH="$(uname -m)"
+info "Platform: $OS ($ARCH)"
+
+# ────────────────────────────────────────────
+# Check prerequisites
+# ────────────────────────────────────────────
+command -v curl &>/dev/null || error "'curl' is required. Install it first."
+command -v sudo &>/dev/null || error "'sudo' is required."
+
+# ────────────────────────────────────────────
+# Step 1: Check if Docker is already installed
+# ────────────────────────────────────────────
+if command -v docker &>/dev/null; then
+	CURRENT_VER="$(docker --version 2>/dev/null || echo 'unknown')"
+	info "Docker is already installed ($CURRENT_VER). Skipping installation."
+	info "To reinstall or upgrade, uninstall first: sudo apt remove docker-ce docker-ce-cli containerd.io"
+	success "Docker is available: $(command -v docker)"
+	exit 0
+fi
+
+# ────────────────────────────────────────────
+# Step 2: Install Docker Engine
+# ────────────────────────────────────────────
+info "Installing Docker Engine..."
+
+if command -v apt-get &>/dev/null; then
+	# ── apt-based systems (Ubuntu, Debian, etc.) ──
+	info "Detected apt-based system. Using Docker official apt repository..."
+
+	# Add Docker's official GPG key
+	sudo apt-get update -y
+	sudo apt-get install -y ca-certificates curl
+	sudo install -m 0755 -d /etc/apt/keyrings
+	sudo curl -fsSL "$DOCKER_GPG_URL" -o /etc/apt/keyrings/docker.asc
+	sudo chmod a+r /etc/apt/keyrings/docker.asc
+
+	# Add the repository to Apt sources
+	CODENAME="$(. /etc/os-release && echo "${UBUNTU_CODENAME:-$VERSION_CODENAME}")"
+	ARCH_DEB="$(dpkg --print-architecture)"
+	sudo tee /etc/apt/sources.list.d/docker.sources >/dev/null <<EOF
+Types: deb
+URIs: ${DOCKER_APT_REPO_URL}
+Suites: ${CODENAME}
+Components: stable
+Architectures: ${ARCH_DEB}
+Signed-By: /etc/apt/keyrings/docker.asc
+EOF
+	sudo apt-get update -y
+
+	# Install Docker packages
+	sudo apt-get install -y docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+	success "Docker installed via apt"
+
+elif command -v dnf &>/dev/null; then
+	# ── dnf-based systems (RHEL, Fedora, CentOS Stream, Rocky, Alma) ──
+	info "Detected dnf-based system. Using Docker official dnf repository..."
+
+	sudo dnf config-manager --add-repo "$DOCKER_DNF_REPO_URL"
+	sudo dnf -y install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
+	sudo systemctl --now enable docker
+	success "Docker installed via dnf"
+
+else
+	error "No supported package manager found (apt-get or dnf). Install Docker manually: https://docs.docker.com/engine/install/"
+fi
+
+# ────────────────────────────────────────────
+# Step 3: Add current user to docker group
+# ────────────────────────────────────────────
+info "Adding current user to the docker group..."
+sudo usermod -aG docker "$(whoami)"
+success "User '$(whoami)' added to the docker group"
+
+info ""
+info "NOTE: Group membership takes effect on next login."
+info "      To apply immediately in this session, run: newgrp docker"
+info "      Or log out and log back in."
+
+# ────────────────────────────────────────────
+# Step 4: Verify installation
+# ────────────────────────────────────────────
+if command -v docker &>/dev/null; then
+	DOCKER_VER="$(docker --version 2>/dev/null || echo 'unknown')"
+	success "Docker is available: $DOCKER_VER"
+else
+	# May need a new shell for group changes
+	warn "Docker was installed but 'docker' command not found in current PATH."
+	warn "Please open a new terminal or run: newgrp docker"
+fi
+
+# ────────────────────────────────────────────
+# Step 5: Post-install notes
+# ────────────────────────────────────────────
+info ""
+info "=================================================="
+success "Docker installation complete!"
+info "=================================================="
+info ""
+info "Getting started:"
+info "  docker run hello-world         - Verify installation"
+info "  docker ps                       - List running containers"
+info "  docker compose up -d           - Start services with Compose"
+info "  docker build -t <name> .       - Build an image"
+info ""
+info "Post-install steps (optional):"
+info "  https://docs.docker.com/engine/install/linux-post-install/"
+info ""
+info "Manage Docker as non-root:"
+info "  You have been added to the 'docker' group."
+info "  Log out and back in for this to take effect."
+info ""
+info "Container monitoring with ctop:"
+info "  Install ctop to monitor containers: install-ctop.sh"