Enable GH action based CI for merge request (#2029)

.github/workflows/compile.yml

@@ -0,0 +1,13 @@
+name: Build
+on:
+  pull_request:
+jobs:
+  build:
+    name: Compile changed kernels
+    runs-on: [self-hosted,public]
+    steps:
+      - name: Run compilation to see if it breaks something
+        shell: bash         
+        run: |  
+         cd build
+         ./compile.sh all KERNEL_ONLY="yes" BETA="no"

README.md

@@ -3,7 +3,7 @@ build tools</h3>
 
 <p align=right>&nbsp;</p>
 
-[![Build Status](https://armbian.lane-fu.com/jenkins/buildStatus/icon?job=test-full)](https://armbian.lane-fu.com/jenkins/job/test-full/)
+[![Build](https://github.com/armbian/build/workflows/Build/badge.svg)](https://github.com/armbian/build/actions?query=workflow%3ABuild)
 [![Twitter Follow](https://img.shields.io/twitter/follow/armbian?style=flat-square)](https://twitter.com/intent/follow?screen_name=armbian)
 
 ## Table of contents