Use both github and self-hosted win runners (#502)

* Test new windows runner

* label update

* Clear workspace before checkout

* rm container after build

* always rm

* test github runnners

* fix merge

* minimize diff

Author: MaxRayskiy

.github/workflows/build-test-windows.yml

@@ -21,6 +21,9 @@ jobs:
       matrix:
         config: [Debug, Release]
     steps:
+      - name: Clear workspace
+        run: Remove-Item -Path "${{ github.workspace }}\*" -Recurse -Force
+
       - name: Checkout
         uses: actions/checkout@v2
         with:
@@ -81,4 +84,8 @@ jobs:
         with:
           name: Distributives
           path: wheelhouse\meshlib-*.whl
-          retention-days: 1
+          retention-days: 1
+          
+      - name: Remove container
+        if: always()
+        run: docker rm -f meshlib-win