CI: add a dogfooding check

This adds a check wher the project's self-check (make check)

is run in a buildbox container with builbo.

Signed-off-by: Michael Adam <obnox@samba.org>

Author: obnoxxx

.github/workflows/ci.yml

@@ -56,4 +56,17 @@ jobs:
           pwd
           ls -l
           builbo -l c -o fedora  -b -s "./autogen.sh && make"
+  dogfood:
+    name: dogfooding: run self-check in builbo
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - name: install builbo
+        run: |
+          sudo make install-cli
+      - name: run self-check
+        run: |
+           builbo -l c -o fedora -d shellcheck,golang -b -s "make check"
+
+