42 أسطر
1.3 KiB
Docker
42 أسطر
1.3 KiB
Docker
FROM python:3.12-slim
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# curl is used by the HEALTHCHECK below.
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RUN apt-get update \
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&& apt-get install -y --no-install-recommends curl \
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&& rm -rf /var/lib/apt/lists/*
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ENV PYTHONDONTWRITEBYTECODE=1 \
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PYTHONUNBUFFERED=1 \
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PIP_NO_CACHE_DIR=1 \
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PORT=8080 \
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WEB_ROOT=/app/dashboard \
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METRICS_FILE=/app/dashboard/data/metrics.json
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WORKDIR /app
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# Dependencies first so editing the collector or dashboard doesn't reinstall them.
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COPY collector/requirements.txt ./collector/requirements.txt
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RUN pip install --no-cache-dir -r collector/requirements.txt
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# Application: the collector and the static dashboard it feeds.
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COPY collector/collect.py ./collector/collect.py
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COPY dashboard/index.html ./dashboard/index.html
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COPY start.sh ./start.sh
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# Tolerate CRLF line endings if the repo was checked out on Windows.
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RUN sed -i 's/\r$//' ./start.sh && chmod +x ./start.sh
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# Non-root user; it must be able to write metrics into the served directory.
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RUN useradd --create-home --uid 10001 appuser \
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&& mkdir -p /app/dashboard/data \
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&& chown -R appuser:appuser /app
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USER appuser
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EXPOSE 8080
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# The dashboard page is the liveness signal for the whole container.
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HEALTHCHECK --interval=60s --timeout=5s --start-period=15s --retries=3 \
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CMD curl -f http://localhost:8080/index.html || exit 1
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CMD ["./start.sh"]
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