Add build-deps to the CI recipe

.gitlab-ci.yml

@@ -6,6 +6,8 @@ build_package:
   before_script:
     - apt-get -y update
     - apt-get -y install devscripts debhelper python3-sphinx git meson ninja-build
+    - apt-get -y install build-essential
+    - apt-get -y build-dep .
   tags:
     - librem5
   script: