CI: officially use this project's CI to publish artifacts

Previously, the dockerfiles project built all its dependencies (also this
project) from source. This commit removes a disclaimer and thus officially uses
this project's pipeline to build and publish artifacts

.gitlab-ci.yml

-# this is a duplicate of the `build-snet-asclepios-search` job in the `dockerfiles` project
-build-snet-asclepios-search:
+stages:
+    - build
+
+build:
     image: node:16-alpine
     stage: build
     script:
@@ -8,3 +10,6 @@ build-snet-asclepios-search:
     artifacts:
         paths:
             - "*"
+        exclude:
+            - ".git*"
+            - ".git/"