Using projects in node-red - where will ssh keyholes be found?

I want to make use of the project feature in my node-red add-on. To work properly, I need to add my ssh id_rsa.pub file so the repo can be updated.

According to the node-red docs, it expects to find the id files in ~/.ssh. Unfortunately, being a docker container, I don’t have access to that folder.

Has anybody cracked this?