Write project config to cloud storage I'm on a read-only filesystem using Google App Engine Flex. I was able to write my cpresources to cloud storage using a plugin, however, now I need to have project.yaml be written elsewhere. perhaps cloud storage as well.
Not sure how to approach this
Untested but you might want to try setting CRAFT_EMPEMERAL to true to skip the filesystem checks.
You can also opt out of automatic project config creation using the Manual YAML File Generation method found in the docs.