sudo: effective uid is not 0

[henrik-farre]

If I build this simple Docker file with buildkit enabled it fails:

FROM quay.io/ansible/molecule:latest

RUN sudo pip install --no-cache-dir pyvmomi \
  && sudo pip install --upgrade ansible[azure]

The error is:

> [2/2] RUN sudo pip install --no-cache-dir pyvmomi   && sudo pip install --upgrade ansible[azure]:
#5 0.603 sudo: effective uid is not 0, is /usr/bin/sudo on a file system with the 'nosuid' option set or an NFS file system without root privileges?
------
executor failed running [/bin/sh -c sudo pip install --no-cache-dir pyvmomi   && sudo pip install --upgrade ansible[azure]]: exit code: 1

Docker version is: 18.09.0-ce

Storage Driver: overlay2
 Backing Filesystem: extfs
 Supports d_type: true
 Native Overlay Diff: false
Runtimes: runc
Default Runtime: runc

Buildkit is enabled by export DOCKER_BUILDKIT=1

Note: I found the an existing bug report here: moby/moby#36730 but I think it might be more correct here?