Fix windows validator-engine.exe runtime access violation error (#387)

* Fix runtime access violation error on Windows

.github/workflows/docker-ubuntu-image.yml

@@ -1,4 +1,4 @@
-name: Build Docker Ubuntu Image
+name: Docker Ubuntu 18.04 image
 
 on:
   workflow_dispatch:
@@ -12,34 +12,28 @@ env:
 
 jobs:
   build-and-push:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
     steps:
-      -
-        name: Checkout
+      - name: Checkout
         uses: actions/checkout@v2
 
-      -
-        name: Set up QEMU
+      - name: Set up QEMU
         uses: docker/setup-qemu-action@v1
         
-      -
-        name: Set up Docker Buildx
+      - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
 
-      -
-        name: Login to GitHub Container Registry
+      - name: Login to GitHub Container Registry
         uses: docker/login-action@v1
         with:
           registry: ${{ env.REGISTRY }}
           username: ${{ github.repository_owner }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      -
-        name: Build and push
+      - name: Build and push
         id: docker_build
         uses: docker/build-push-action@v2
         with:
           push: true
           context: ./docker
-          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
-
+          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest