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f28a652a32
More often than not I find myself debugging in the containers which means that I need to have root inside, but without manually tweaking the Makefile each time the execution would simply fail thanks to the uid/gid mapping we do. What if we expose the CI_USER_LOGIN variable, so that when needed, the root can be simply passed with this variable and voila - you have a root shell inside the container with CWD=~root. Signed-off-by: Erik Skultety <eskultet@redhat.com> Reviewed-by: Andrea Bolognani <abologna@redhat.com>
==============
CI for libvirt
==============
This document provides some information related to the CI capabilities for the
libvirt project.
Cirrus CI integration
=====================
libvirt currently supports three non-Linux operating systems: Windows, FreeBSD
and macOS. Windows cross-builds can be prepared on Linux by using `MinGW`_, but
for both FreeBSD and macOS we need to use the actual operating system, and
unfortunately GitLab shared runners are currently not available for either.
To work around this limitation, we take advantage of `Cirrus CI`_'s free
offering: more specifically, we use the `cirrus-run`_ script to trigger Cirrus
CI jobs from GitLab CI jobs so that the workaround is almost entirely
transparent to users and there's no need to constantly check two separate CI
dashboards.
There is, however, some one-time setup required. If you want FreeBSD and macOS
builds to happen when you push to your GitLab repository, you need to
* set up a GitHub repository for the project, eg. ``yourusername/libvirt``.
This repository needs to exist for cirrus-run to work, but it doesn't need to
be kept up to date, so you can create it and then forget about it;
* enable the `Cirrus CI GitHub app`_ for your GitHub account;
* sign up for Cirrus CI. It's enough to log into the website using your GitHub
account;
* grab an API token from the `Cirrus CI settings`_ page;
* in the *CI/CD / Variables* section of the settings page for your GitLab
repository, create two new variables:
* ``CIRRUS_GITHUB_REPO``, containing the name of the GitHub repository
created earlier, eg. ``yourusername/libvirt``;
* ``CIRRUS_API_TOKEN``, containing the Cirrus CI API token generated earlier.
This variable **must** be marked as *Masked*, because anyone with knowledge
of it can impersonate you as far as Cirrus CI is concerned.
Neither of these variables should be marked as *Protected*, because in
general you'll want to be able to trigger Cirrus CI builds from non-protected
branches.
Once this one-time setup is complete, you can just keep pushing to your GitLab
repository as usual and you'll automatically get the additional CI coverage.
.. _Cirrus CI GitHub app: https://github.com/marketplace/cirrus-ci
.. _Cirrus CI settings: https://cirrus-ci.com/settings/profile/
.. _Cirrus CI: https://cirrus-ci.com/
.. _MinGW: http://mingw.org/
.. _cirrus-run: https://github.com/sio/cirrus-run/