Harbor docker proxy behind corporate proxy

[EsDmitrii]

Hi!
Is it possible for Harbor to pull images via docker proxy while behind a corporate proxy?
For example:
Corporate network has no internet access. So I need to pull images via docker-proxy registries (for example ghcr.io, gcr.io, quay.io, etc) using corporate proxy server that has internet access.
I found this in Helm values:

But I don't know will it work for docker-proxy registries or not.
Thank you in advance!