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Incorrect curl options when using TCP docker endpoint

When using TCP docker endpoint instead of UNIX socket one, docker-label-sighup still adds --unix-socket option to curl's commandline.
Execution log of docker-label-sighup:

bash-5.1# printenv DOCKER_HOST
tcp://docker-proxy:2375
bash-5.1# bash -x /usr/bin/docker-label-sighup com.example.nginx_proxy
++ docker_api /containers/json GET 'filters={"label": ["com.example.nginx_proxy"]}'++ jq 
++ local host
++ local path=/containers/json
++ local method=GET
++ local 'data=filters={"label": ["com.example.nginx_proxy"]}'
++ curl_opts=('-s')
++ local curl_opts
++ '[' GET = POST ']'
++ '[' -n 'filters={"label": ["com.example.nginx_proxy"]}' ']'
++ curl_opts+=(--get)
++ curl_opts+=(--data-urlencode "$data")
++ '[' -z tcp://docker-proxy:2375 ']'
++ '[' -n tcp://docker-proxy:2375 ']'
++ curl_opts+=(--unix-socket ${DOCKER_HOST#unix://})
++ host=http://localhost
-r ++ curl -s --get --data-urlencode 'filters={"label": ["com.example.nginx_proxy"]}' --unix-socket tcp://docker-proxy:2375 http://localhost/containers/json
'[.[] | .Id] | join(" ")'
+ containers=
+ '[' -z '' ']'
+ echo 'Error: can'\''t get containers for label '\''com.example.nginx_proxy'\'''
Error: can't get containers for label 'com.example.nginx_proxy'
+ exit 1

I believe the issue was introduced in 7c9a946.

Stale registry image and general project status

Hi,
I noticed the dockerhub registry entry is now pretty stale, missing the subsequent upstream releases at nginxproxy/docker-gen.

From what I see, the current Dockerfile would only need to change the base image to nginxproxy/docker-gen (the upstream project has since been transferred)

Is this project still usable/used, or would you recommend against it?

If it shouldn't be used, do you have any alternative solution you know of?

Thanks!!

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