Run tests inside container

Author: liufengyun

.github/workflows/ci.yaml

@@ -105,8 +105,10 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Test
-        run: sbt ";compile ;test"
-        shell: cmd
+        uses: liufengyun/actions@v2
+        with:
+          container: lampepfl/dotty-windows:2020-10-02
+          command: cd C:\\dotty; sbt ";compile ;test"
 
   test_bootstrapped-windows:
     runs-on: [self-hosted, Windows]
@@ -116,8 +118,10 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Test
-        run: sbt ";dotty-bootstrapped/compile ;dotty-bootstrapped/test"
-        shell: cmd
+        uses: liufengyun/actions@v2
+        with:
+          container: lampepfl/dotty-windows:2020-10-02
+          command: cd C:\\dotty; sbt ";dotty-bootstrapped/compile ;dotty-bootstrapped/test"
 
       # - name: Scala.js Test
       #   uses: liufengyun/actions@v1