Update msbuild.yml

.github/workflows/msbuild.yml

@@ -1,18 +1,16 @@
 name: MSBuild
 
 on:
-  push:
+  workflow_call:
-    branches: [ "aboveS20", "belowS20" ]
+    inputs:
-  pull_request:
+      branch:
-    branches: [ "aboveS20", "belowS20" ]
+        description: 'The name of the branch to checkout and build'
+        required: true
+        type: string
+  
 
 env:
-  # Path to the solution file relative to the root of the project.
   SOLUTION_FILE_PATH: .
-
-  # Configuration type to build.
-  # You can convert this to a build matrix if you need coverage of multiple configuration types.
-  # https://docs.github.com/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
   BUILD_CONFIGURATION: Release
 
 permissions:
@@ -24,6 +22,8 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
+      with:
+	      ref:  ${{ inputs.branch }}
 
     - name: Add MSBuild to PATH
       uses: microsoft/setup-msbuild@v1.0.2
@@ -34,8 +34,6 @@ jobs:
 
     - name: Build
       working-directory: ${{env.GITHUB_WORKSPACE}}
-      # Add additional options to the MSBuild command line here (like platform or verbosity level).
-      # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
       run: msbuild /m /p:Configuration=${{env.BUILD_CONFIGURATION}} ${{env.SOLUTION_FILE_PATH}}
 
     - name: Upload Release Artifact