head-node: Add ‘images’ jobset.

* head-node.scm (cuirass-specs): Add ‘images’ spec.

head-node.scm

@@ -229,7 +229,24 @@ export CUIRASS_LOGGING_LEVEL=${CUIRASS_LOGGING_LEVEL:-debug}\n"
                                          "jupyter" "guix-jupyter" "julia"))
                        (channels (list #$(guix-channel branch)))))
                   '(guix guix-1.4.0)
-                  '("master" "version-1.4.0"))))
+                  '("master" "version-1.4.0"))
+
+          (specification
+           (name 'images)
+           (systems '("x86_64-linux"))
+           (channels (cons (channel
+                            (name 'guix-images)
+                            (url "https://gitlab.inria.fr/numpex-pc5/wp3/guix-images")
+                            (branch "main"))
+                           %default-channels))
+           (build '(manifests "manifests/main.scm"))
+           (build-outputs
+            (list (build-output
+                   (job ".*-image")
+                   (type "archive")
+                   (path ""))))
+           (period 86400)
+           (priority 4))))
 
 (define this-file
   ;; This configuration file next to its companion files (SSH keys, nginx