55 lines
1.3 KiB
Docker
55 lines
1.3 KiB
Docker
# Multi-stage build for smaller image size
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FROM python:3.11-slim as builder
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WORKDIR /app
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# Install build dependencies
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RUN apt-get update && apt-get install -y --no-install-recommends \
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gcc \
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&& rm -rf /var/lib/apt/lists/*
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# Copy requirements first for layer caching
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COPY requirements.txt .
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# Install Python dependencies
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RUN pip install --no-cache-dir --user -r requirements.txt
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# Final stage
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FROM python:3.11-slim
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# Create non-root user for security
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RUN useradd -m -u 1000 appuser
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WORKDIR /app
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# Copy Python dependencies from builder
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COPY --from=builder /root/.local /home/appuser/.local
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# Copy application code
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COPY --chown=appuser:appuser . .
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# Make sure scripts are executable (if you have any)
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# RUN chmod +x entrypoint.sh
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# Switch to non-root user
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USER appuser
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# Add user's local bin to PATH
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ENV PATH=/home/appuser/.local/bin:$PATH
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# Environment variables
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ENV FLASK_APP=app.py
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ENV FLASK_RUN_HOST=0.0.0.0
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ENV PORT=5000
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ENV PYTHONUNBUFFERED=1
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# Health check - Docker level (optional, Nomad will also check)
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HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \
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CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:${PORT}/health')" || exit 1
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# Expose port (documentation only)
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EXPOSE 5000
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# Command to run the application
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CMD ["sh", "-c", "flask run --port ${PORT}"]
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