Custom registry on different port does not work

[brunocascio]

The following configuration does not match the proxy

docker run --rm -d --name docker_registry_proxy -it \
    --net kind --hostname docker-registry-proxy \
    -e REGISTRIES='nexus.example.com:5002' \
    -e VERIFY_SSL=false \
    -e ENABLE_MANIFEST_CACHE=true \
    -p 0.0.0.0:3128:3128 \
    -v $(pwd)/docker_mirror_cache:/docker_mirror_cache \
    -v $(pwd)/docker_mirror_certs:/ca \

this one, matches but it tries to proxy to nexus.example.com:443

docker run --rm -d --name docker_registry_proxy -it \
    --net kind --hostname docker-registry-proxy \
    -e REGISTRIES='nexus.example.com' \
    -e VERIFY_SSL=false \
    -e ENABLE_MANIFEST_CACHE=true \
    -p 0.0.0.0:3128:3128 \
    -v $(pwd)/docker_mirror_cache:/docker_mirror_cache \
    -v $(pwd)/docker_mirror_certs:/ca \

Example of pull

kubectl run test-$(date +%s) --image=nexus.example.com:5002/traefik --restart=Never -- /bin/sh -c "while true; do sleep 30; done;"

Is there a way to proxy to different ports?