(I work for Docker on the M1 support) I'm glad it's working for you! There's a bug in the recent Docker Desktop on Apple Silicon RC build which affects some users of vagrant at the provisioning stage when the new ssh key is copied into the machine. It turned out that the permissions of `/dev/null` inside `--privileged` containers were `0660` (`rw-rw----`) instead of `0666` (`rw-rw-rw-`) In case you (or someone else) runs across this there's an open issue with a link to a build with the fix: https://github.com/docker/for-mac/issues/5527#issuecomment-8...