39 lines
1.6 KiB
Docker
39 lines
1.6 KiB
Docker
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# eg4-battery daemon — containerized.
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#
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# Build: docker build -t eg4-battery .
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# Run: see docker-compose.yml for device passthrough + config mount
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#
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# Design notes:
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# - Same Python source (bin/eg4-battery) used in both systemd and Docker
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# deployments. PEP-723 inline deps are ignored when run with `python` directly,
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# so they're harmless. Container deps come from requirements.txt.
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# - Config is mounted at /config/eg4-battery.yaml (read-only). MQTT
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# credentials can be overridden via env vars (see env-override block in
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# bin/eg4-battery's main()), making them suitable for Docker secrets or
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# HA-addon options translation.
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# - Logs go to stdout (Python logging defaults work — `docker logs` captures).
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FROM python:3.11-slim AS base
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# pyserial wants the native serial-port permissions to "just work" inside
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# the container; we hand the device through via docker-compose `devices:`.
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# No extra system packages needed.
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WORKDIR /app
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# --- Python deps --------------------------------------------------------
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COPY requirements.txt .
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RUN pip install --no-cache-dir -r requirements.txt
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# --- daemon source ------------------------------------------------------
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COPY bin/eg4-battery /app/eg4-battery
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RUN chmod +x /app/eg4-battery
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# --- runtime ------------------------------------------------------------
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# Config volume mount expected at /config (read-only); see compose file.
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VOLUME ["/config"]
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# Run as the daemon's main entrypoint. We exec via `python` so the PEP-723
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# shebang isn't invoked (uv isn't in this image).
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ENTRYPOINT ["python", "/app/eg4-battery", "-C", "/config/eg4-battery.yaml"]
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