18 lines
933 B
YAML
18 lines
933 B
YAML
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# Optional WarmteLink serial overlay. Use only together with docker-compose.yml:
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# WARMTELINK_DEVICE_PATH=/dev/serial/by-id/<stable-by-id-name> \
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# WARMTELINK_SERIAL_GID=<host-serial-gid> \
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# docker compose -f docker-compose.yml -f docker-compose.warmtelink.yml up -d
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#
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# Keep the stable /dev/serial/by-id path on the host: /dev/ttyUSB* names may
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# change after a reboot. pyserial opens POSIX serial devices with O_RDWR, so
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# Docker must grant the device cgroup rule rw (never m). This is only the
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# system permission required to open the fd: the WarmteLink worker itself only
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# calls read/close and has no write path. The base compose non-root user stays
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# in effect; this overlay grants neither root nor privileged mode.
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services:
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app:
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devices:
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- "${WARMTELINK_DEVICE_PATH:?Set a stable /dev/serial/by-id path}:/dev/warmtelink:rw"
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group_add:
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- "${WARMTELINK_SERIAL_GID:?Set the host serial device GID}"
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