Bitwarden update script needs Github etc

Hello all,

My server is behind a proxy, I have allowed necessary links as the documentation says, however installation script fails every time because a link is called from github that server has no access to it via proxy, for example:

https://objects.githubusercontent.com
https://production.cloudflare.docker.com

How can we solve the problem without doing complex offline installation ?

According to the documentation, only these 2 links are necessary. but unfortunately without Github, no updates can be performed via script. Is there a solution in the meantime ?

Or can you at least complete self-hosting documentation with all the links needed for update?

Thank You