Re: RFC: docker for CI

[Werner LEMBERG]

> * Because the build happens inside a container, we can test multiple
>   builds. We could build against guile 1.8 and 2.2 at the same time,
>   for example.

I have zero experience with docker, but your suggestions sound quite
interesting!

Regarding image comparison: The Chromium team uses FreeType HEAD for
building; they also have collected a large set of graphical images
(mostly browser rendering snapshots) for comparison purposes.  If
something happens on the FreeType side, this is, if rendering
differences occur, their build process emits an alert, and manual
inspection takes place.

To me, this seems very similar to what LilyPond needs.  Since you are
at Google it probably makes sense to check what they have done to
automate everything.  My main contact person is Dominik Röttsches
<address@hidden>; I guess you could talk to him.


    Werner