Cannot build Meson project in Docker container

[jkraskesis]

I cannot build a Meson project in a Docker container.

To reproduce:

1. Create a Meson project using the new C/C++ project wizard
2. Go to "project options"
3. There is no "C/C++ Build", "Settings", "Container Settings"

I expect "C/C++ Build", "Settings", "Container Settings"

Eclipse IDE for C/C++ Developers (includes Incubating components)
Version: 2025-09 (4.37.0)
Build id: 20250905-1456

C/C++ Meson Build Support - Preview
Version: 12.2.0.202506091931
Build id: 20250903-0008

[jonahgraham]

Is this something you used to be able to do and it has regressed? I am not sure how Docker is supposed to integrate into Meson project builds. Perhaps @jjohnstn has some ideas?

[jkraskesis]

It was the first time I tried, so I don't know if it is a regression.

[jonahgraham]

I forgot how this worked when I commented yesterday - for "classic" projects (managed build) you set build container here:

For newer projects (meson, cmake, etc) built on "core build" you set it in the launchbar:

I don't have a docker image with meson installed at hand at the moment, but hopefully the above screenshot gives you the general idea.