fix integration

.gitlab-ci.yml

@@ -4,6 +4,12 @@
 # see https://hub.docker.com/_/gcc/
 image: registry.git.lacl.fr/barbot/grapheditor
 
+before_script:
+  - eval `opam config env`
+  - opam update
+  - opam install eliom js_of_ocaml js_of_ocaml-camlp4 js_of_ocaml-lwt js_of_ocaml-lwt num bisect_ppx-ocamlbuild alcotest
+
+
 build:
   stage: build
   script: