Dockerfile fixes.
Fix perms for gear-auth-keys-command to be able to read units as nobody/nobody
Merge pull request #83 from mrunalp/dev/dockerfile_fixes

Dockerfile fixes.
Merge pull request #84 from kraman/perm_fixes_for_sshd

Fix perms for gear-auth-keys-command to be able to read units as nobody/nobody
Remove read symlink when adding write keys for git repositories and vice-versa
Merge pull request #85 from kraman/remove_git_read_key_on_write_perm

Remove read symlink when adding write keys for git repositories and vice...
Fix up gear command, Dockerfile, Vagrantfile