add publish

Author: codehz

.github/workflows/dotnetcore.yml

@@ -4,8 +4,10 @@ on: [push]
 
 jobs:
   build:
-
     runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        os: [win-x64, linux-x64]
 
     steps:
     - uses: actions/checkout@v2
@@ -14,4 +16,6 @@ jobs:
       with:
         dotnet-version: 3.1.100
     - name: Build with dotnet
-      run: dotnet build --configuration Release
+      run: dotnet build -c Release
+    - name: Publish
+      run: dotnet publish -c Release -r ${{ matrix.os }} --self-contained