Caddy healthcheck is flooding log files with "stream copy error"s

[dhlavaty]

Healtcheck at

seafile-admin-docs/manual/repo/docker/caddy.yml

Lines 17 to 22 in a8c9dcf

	healthcheck:
	test: ["CMD-SHELL", "curl --fail http://localhost:2019/metrics || exit 1"]
	start_period: 20s
	interval: 20s
	timeout: 5s
	retries: 3

is flooding log files with stream copy error every 20 seconds.

I followed official docs to run Seafile on my raspberry pi 5 running Debian GNU/Linux 12 (bookworm).

Nevertheless, the whole Seafile works properly.

I only found this healthcheck mentioned here in https://github.com/haiwen/seafile-admin-docs/ project, so I'm opening this issue here.

Example:

Jan 31 10:49:03 rpi5 dockerd[846]: time="2025-01-31T10:49:03.263113426+01:00" level=warning msg="Health check for container 68150f06ac84b4e5d48f9>
Jan 31 10:49:23 rpi5 dockerd[846]: time="2025-01-31T10:49:23.329812669+01:00" level=error msg="stream copy error: reading from a closed fifo"
Jan 31 10:49:23 rpi5 dockerd[846]: time="2025-01-31T10:49:23.329828521+01:00" level=error msg="stream copy error: reading from a closed fifo"
Jan 31 10:49:23 rpi5 dockerd[846]: time="2025-01-31T10:49:23.331945323+01:00" level=warning msg="Health check for container 68150f06ac84b4e5d48f9>
Jan 31 10:49:43 rpi5 dockerd[846]: time="2025-01-31T10:49:43.419218442+01:00" level=error msg="stream copy error: reading from a closed fifo"
Jan 31 10:49:43 rpi5 dockerd[846]: time="2025-01-31T10:49:43.419218461+01:00" level=error msg="stream copy error: reading from a closed fifo"
Jan 31 10:49:43 rpi5 dockerd[846]: time="2025-01-31T10:49:43.421551467+01:00" level=warning msg="Health check for container 68150f06ac84b4e5d48f9>
Jan 31 10:50:03 rpi5 dockerd[846]: time="2025-01-31T10:50:03.486763327+01:00" level=error msg="stream copy error: reading from a closed fifo"
Jan 31 10:50:03 rpi5 dockerd[846]: time="2025-01-31T10:50:03.486793346+01:00" level=error msg="stream copy error: reading from a closed fifo"
Jan 31 10:50:03 rpi5 dockerd[846]: time="2025-01-31T10:50:03.489752502+01:00" level=warning msg="Health check for container 68150f06ac84b4e5d48f9>
Jan 31 10:50:23 rpi5 dockerd[846]: time="2025-01-31T10:50:23.567312512+01:00" level=error msg="stream copy error: reading from a closed fifo"
Jan 31 10:50:23 rpi5 dockerd[846]: time="2025-01-31T10:50:23.567424494+01:00" level=error msg="stream copy error: reading from a closed fifo"
Jan 31 10:50:23 rpi5 dockerd[846]: time="2025-01-31T10:50:23.570884077+01:00" level=warning msg="Health check for container 68150f06ac84b4e5d48f9>
Jan