repo-install-test: don't mount /data

The "run-inside-docker.sh" script is running as root (in order to be
able to install packages). Do not mount an outside directory as /data
inside the image anymore, where the script would write temporary data.
This causes problems on jenkins, as the temporary files are written as
root and jenkins is then unable to wipe the workspace.

I had used this for debugging when I wrote the script initially, but
almost the same can be done now with INTERACTIVE=1 and cat on the
temporary files.

Related: OS#4563
Change-Id: If7e1d83580c2951e7e50181ba7e755b987675e4b
2 files changed