build-unit-test-docker: Fix permissions

Using --create-dirs on curl makes directories with 0750 permissions.
This prevents our builder from reading the file inside the directory.
Create it with `mkdir` instead so that we end up with the correct
permissions.

Change-Id: If871d614a05fff6d1198c6e0de3ba76b48a02da0
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed