I still can't bind mount a file in a container if that file already exists in that containter. Is this production ready?
docker run -it -v /private/etc/passwd:/etc/passwd alpine sh (not recommended for any actual use obviously)
Is there a particular case in which this failed for you? We'd appreciate a bug report on https://github.com/docker/for-mac/issues (or from the Docker for Mac GUI, just click on "Diagnose and Feedback") so we can chase down whatever issue you're having.
C:\Program Files\Docker\Docker\Resources\bin\docker.exe: Error response from daemon: oci runtime error: rootfs_linux.go:53: mounting "/var/lib/docker/aufs/mn t/90d24356afdeb7b9ddad4b3b6903be92063151c33bf34f3d63ede464437060c6/cryptoservice/broker-config.yml" to rootfs "/var/lib/docker/aufs/mnt/90d24356afdeb7b9ddad4 b3b6903be92063151c33bf34f3d63ede464437060c6" caused "not a directory".
(I'm mounting broker-config.yml and that file is already present in the container. Most recent Docker for Win beta in this case, but getting the same on non-beta Docker for Mac.)