diff --git a/.dockerignore b/.dockerignore
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+++ b/.dockerignore
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+__pycache__/
+*.py[cod]
+*.sqlite3
+.env
+.venv/
+venv/
+.git/
+.github/
+.gitignore
+.DS_Store
+data/users.json
diff --git a/Dockerfile b/Dockerfile
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+# Dockerfile for docker-fastapi-test
+FROM python:3.11-slim
+
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1
+
+WORKDIR /app
+
+# Install system deps only if needed for building packages
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install Python deps
+COPY requirements.txt ./
+RUN pip install --no-cache-dir -r requirements.txt
+
+# Copy application
+COPY . .
+
+# Ensure data dir exists
+RUN mkdir -p /app/data
+
+EXPOSE 8000
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
diff --git a/docker-compose.yaml b/docker-compose.yaml
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+++ b/docker-compose.yaml
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+version: "3.9"
+services:
+  api:
+    build: .
+    container_name: fastapi_app
+    ports:
+      - "8000:8000"
+    # Persist users.json across container recreations
+    volumes:
+      - app_data:/app/data
+    restart: unless-stopped
+
+volumes:
+  app_data:
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