fix(ci): build in the known-good kaniko-act

The org rebuild exits 0 but produces an image without /tmp, so the
source fetch fails. Runner image still publishes to the org namespace;
only the builder stays put.

.gitea/workflows/build-image.yml

@@ -14,7 +14,10 @@ jobs:
       # Daemonless image builder: kaniko :debug plus the /bin/sleep symlink
       # act needs for job-container PID 1 (see ci/Dockerfile.kaniko-act).
       # No docker socket, no privileges.
-      image: pi5-16.local:3005/novoyuuparosk-wiki/kaniko-act:v1.23.2-r2
+      # Deliberately the `mikkeli` copy: the org rebuild of kaniko-act loses
+      # /tmp (kaniko does not persist the empty dir), which breaks the wget
+      # below. See build-kaniko-act.yml. Do not repoint without testing.
+      image: pi5-16.local:3005/mikkeli/kaniko-act:v1.23.2-r2
 
     steps:
       - name: Fetch source, build, push