add some kernel build dependencies

.gitlab-ci.yml

@@ -6,7 +6,7 @@ build-kernel:
   stage: build
   script:
     - apt-get update
-    - apt-get install -y build-essential curl bison flex
+    - apt-get install -y build-essential curl bison flex bc rsync kmod cpio lsb-release libssl-dev
     - cd kernel; ./compile.bash
   tags:
   - highmem