COPY files to user directory about cqfd

[joufella]

Hello @ODugas, I agree this can be tricky if you relied on this behaviour. Initially I planned to provide a backwards-compatible mode and the implementation made that easy.

Can you look at the wip commits of the noel2018 branch at https://github.com/joufella/cqfd/commits/noel2018 and provide feedback. It allows setting legacy_builder_user=true in the [project] section to restore the behaviour. Also, it adds support for custom docker build arguments via CQFD_EXTRA_BUILD_ARGS.

[ODugas]

wonderful! I can't wait for this to be integrated to master. For the time being, I worked around the issue by dynamically mounting volumes at runtime, but this CQFD_EXTRA_BUILD_ARGS is a must in some of our projects where this workaround isn't possible.