feat: add Dockerfile

.dockerignore

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+__pycache__
+*.pyc
+*.pyo
+*.pyd
+.Python
+.pytest_cache
+.coverage
+.git
+.gitignore
+README.md
+Dockerfile
+.dockerignore
+.env
+.venv
+venv
+poetry.lock
+.pylintrc
+.mypy_cache
+math_env
+AGENTS.md

Dockerfile

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+# Use Python 3.11 slim image as base
+FROM python:3.11-slim
+
+# Set working directory
+WORKDIR /app
+
+# Set environment variables
+ENV PYTHONDONTWRITEBYTECODE=1 \
+    PYTHONUNBUFFERED=1 \
+    POETRY_NO_INTERACTION=1 \
+    POETRY_VENV_IN_PROJECT=1 \
+    POETRY_CACHE_DIR=/tmp/poetry_cache
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements file
+COPY requirements.txt .
+
+# Install Python dependencies
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir -r requirements.txt
+
+# Create a non-root user
+RUN adduser --disabled-password --gecos '' appuser
+
+# Copy application code
+COPY ./app /app/app
+COPY ./generate_math_exercises.py /app/
+
+# Change ownership of the app directory to the non-root user
+RUN chown -R appuser:appuser /app
+
+# Switch to non-root user
+USER appuser
+
+# Expose port
+EXPOSE 8000
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:8000/ || exit 1
+
+# Run the application
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]