Joseph Doherty
37 lines
1.7 KiB
Docker
37 lines
1.7 KiB
Docker
# pymodbus simulator container for the Modbus integration suite.
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#
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# Pinned base + package version so the fixture surface is reproducible —
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# matches the version referenced in docs/drivers/Modbus-Test-Fixture.md.
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FROM python:3.12-slim-bookworm
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LABEL org.opencontainers.image.source="https://github.com/dohertj2/lmxopcua" \
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org.opencontainers.image.description="pymodbus simulator for OtOpcUa Modbus driver integration tests"
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RUN pip install --no-cache-dir "pymodbus[simulator]==3.13.0"
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# Ship every profile in the image so one container can serve whichever
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# family a test run needs; the compose file picks which JSON is active via
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# the command override.
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WORKDIR /fixtures
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COPY profiles/ /fixtures/
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# Standalone exception-injection server (pure Python stdlib — no pymodbus
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# dependency). Speaks raw Modbus/TCP and emits arbitrary exception codes
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# per rules in exception_injection.json. Drives the `exception_injection`
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# compose profile. See Docker/README.md §exception injection.
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COPY exception_injector.py /fixtures/
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# 5020 = the shared port for the standard/dl205/mitsubishi/s7_1500/exception_injection
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# profiles (only one binds it at a time); 5021 = the rtu_over_tcp profile, which co-runs
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# with standard. Image-metadata honesty only — compose's ports: mapping doesn't need EXPOSE.
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EXPOSE 5020 5021
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# Default to the standard profile; docker-compose.yml overrides per service.
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# --http_port intentionally omitted; pymodbus 3.13's web UI binds on a
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# container-local default we don't publish, so it's not reachable from the
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# host and costs nothing.
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CMD ["pymodbus.simulator", \
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"--modbus_server", "srv", \
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"--modbus_device", "dev", \
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"--json_file", "/fixtures/standard.json"]
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