Are you seeing the problem on a Mac?
Using my mix project and docker files (which are unrelated to Sentry) on both an Mac and on our Linux-based build server, I’ve seen similar compile problems “frequently” when running in the dev environment on my Mac laptop, but never when running the container on the build server. The Mac often finishes without error - but will fail once out of 4 or 5 times.
I suspect that it may be related to the synchronization and timing between the Macintosh file system, and the container’s virtual file system. You may choose to read https://docs.docker.com/docker-for-mac/osxfs/#performance-issues-solutions-and-roadmap
But please understand that this is just a suspicion on my part - I have no verifiable evidence to prove or disprove.
