Unable to evaluate localhost via Docker container about linkcheck

[xakraz]

✋🏻 I am facing the exact same issue.

What is strange is I think it was running fine a few days ago and not today 🤔

linkcheck version 2.0.20

My usage

On a Linux host

docker-compose up <my-service>
-> binds in 8000:8000

docker run --rm \
	--network=host \
	-v "${PWD}/tools/linkcheck/:/skipfiles/" \
	tennox/linkcheck :8000 --skip-file /skipfiles/skip_files.txt

Crawling...

Provided URLs failing:
http://localhost:8000/ (connection failed)


Stats:
       0 links
       1 destination URLs
       0 URLs ignored
       0 warnings
       1 errors

make: *** [Makefile:115: test-live-links] Error 2

Despite the fact that, within the linkcheck container

# curl -I  http://localhost:8000

HTTP/1.0 200 OK
Date: Thu, 09 Feb 2023 19:05:16 GMT
Server: WSGIServer/0.2 CPython/3.9.2
Content-Type: text/html
Content-Length: 80749