hi, I install SF with hypervisor-k1s, use openshiftpod provider run CI job. opensiftpod provider like https://softwarefactory-project.io/docs/nodepool/openshift-pods.html 
How to configure ubuntu zuul worker dockerfile, What software and configuration need add, thanks. 
some configure like
```
FROM ubuntu:20.04
RUN mv /etc/sudoers /etc/sudoers.d/zuul && grep includedir \
  /etc/sudoers.d/zuul > /etc/sudoers && sed -e 's/.*includedir.*//' -i \
  /etc/sudoers.d/zuul && chmod 440 /etc/sudoers
RUN echo "zuul:x:0:0:root:/root:/bin/bash" >> /etc/passwd
```