diff --git a/.dockerignore b/.dockerignore
new file mode 100644
index 0000000..dee1992
--- /dev/null
+++ b/.dockerignore
@@ -0,0 +1,9 @@
+__pycache__
+.pytest_cache
+.venv
+.git
+*.pyc
+*.pyo
+*.pyd
+*.swp
+*.swo
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8d057e5
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,27 @@
+COMPOSE = docker compose
+
+.PHONY: init up test down help
+.DEFAULT_GOAL := help
+
+# 初回セットアップまたは依存関係の更新時に実行
+init:
+	$(COMPOSE) build
+
+# コンテナ起動
+up:
+	$(COMPOSE) up -d
+
+# テスト実行
+test:
+	$(COMPOSE) run --rm app
+
+# 後片付け
+down:
+	$(COMPOSE) down
+
+# 使い方表示
+help:
+	@echo "make init  - ビルド（初回セットアップ）"
+	@echo "make up    - コンテナ起動（バックグラウンド）"
+	@echo "make test  - テスト実行（pytest）"
+	@echo "make down  - コンテナ停止と後片付け"
diff --git a/compose.yml b/compose.yml
new file mode 100644
index 0000000..161ae26
--- /dev/null
+++ b/compose.yml
@@ -0,0 +1,9 @@
+services:
+  app:
+    build:
+      context: .
+      dockerfile: docker/app/Dockerfile
+    working_dir: /app
+    volumes:
+      - .:/app
+    command: ["pytest", "-vv"]
diff --git a/docker/app/Dockerfile b/docker/app/Dockerfile
new file mode 100644
index 0000000..bd760c0
--- /dev/null
+++ b/docker/app/Dockerfile
@@ -0,0 +1,13 @@
+FROM python:3.11-slim
+
+WORKDIR /app
+
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+COPY requirements.txt /app/requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY src /app/src
+COPY test /app/test
+COPY README.md /app/README.md