Test directly in docker maybe?

.forgejo/workflows/ci.yml

@@ -1,5 +1,22 @@
 on: [push]
 jobs:
+  test_directly_in_docker:
+    runs-on: docker
+    name: "Test in docker on 29"
+    container: docker.io/silex/emacs:29.4-ci
+    steps:
+      - name: Checkout
+        uses: https://code.forgejo.org/actions/checkout@v4
+
+      - name: Install deps
+        run: eask install-deps --dev
+
+      - name: Run tests
+        run: eask test buttercup
+
+      - name: Build package to dist
+        run: eask package
+
   test:
     name: Test on ${{matrix.emacs-version}}
     runs-on: docker