create dotnet build action

Author: pjvds

.github/workflows/dotnet.yml

@@ -0,0 +1,19 @@
+name: Docker Image CI
+
+on: [push]
+
+jobs:
+
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Build the Docker image
+      run: |
+        docker build . --file Dockerfile --tag streamsdb/dotnet-driver
+        pushd dotnet
+        docker build --build-arg VERSION="0.9.5-dev" -t streamsdb/dotnet-driver .
+        #docker run --rm --name push-packages streamsdb/dotnet-driver --source https://api.nuget.org/v3/index.json --api-key $NUGET_TOKEN
+        popd