I am building a container inside of a container(Gitlab runner kubernetes pod) but it keeps failing. The Dockerfile of the container to build is:
FROM ubuntu
USER root
RUN ["touch", "hello"]
RUN touch test
CMD ["echo", "hello"]
it fails in the line RUN ["touch", "hello"] with:
process exited with error: fork/exec /usr/bin/touch: permission deniedsubprocess exited with status 1
When I comment that line out it fails in the next one with:
process exited with error: fork/exec /bin/sh: permission deniedsubprocess exited with status 1
The user is root so there should be no permission errors and since im building FROM ubuntu the exec flags for /bin are set.
So what does the error message mean?