CI

CI

.github/workflows/build.yml cross-compiles the Ender-3 V3 KE asset (material theme, small screen) on pushes to main/develop/ke-next and on tags.

Since the Final Closure mission (2026-08-15), it runs inside the same digest-pinned ghcr.io/coreflake1/nebulaos-build image NebulaOS-firmware's own build.sh uses — not the retired standalone ghcr.io/coreflake1/guppydev:latest. We confirmed both toolchain prefixes the workflow's matrix expects actually resolve to real binaries in the new image before switching. Two real gotchas came up during that migration, both explained right in the workflow file's own comments:

• An arbitrary container UID has no /etc/passwd entry in this image, so HOME defaults to / (unwritable) — we set it to /tmp explicitly.
• The image deliberately doesn't put the Bootlin toolchain on the global PATH (its bundled autoreconf/automake would shadow the system ones a v4l-utils-style build needs) — guppydev used to put it directly on PATH, so this tripped us up briefly.

There's also .github/workflows/wiki.yml, which syncs the wiki/ folder to this repo's own GitHub Wiki on every push to main that touches wiki/**. See Wiki Publishing for how that works — and a real failure it hit (2026-08-14, fixed the next day) because the wiki had never had a first page yet.

See also: Integration with NebulaOS, and NebulaOS-firmware's Build Environment doc for what's actually in that shared image.