Hello @G76S,
From the documentation at:
Atlassian applications allow the use of reverse-proxies with our products,
however Atlassian Support does not provide assistance for configuring them.
Consequently, Atlassian cannot guarantee providing any support for them.
Also of note: you are not using an official Atlassian image, you are using a 3rd party image.
There is not much we can assist with, due to the customization, and the non-support from the source.
I would reach out to the teamatldocker group at GitHub - teamatldocker/jira: Dockerized Atlassian Jira, as they may be able to provide more assistance.