Add GitHub Actions

.github/workflows/ci.yml

@@ -0,0 +1,24 @@
+name: CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup .NET Core
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 3.1.101
+    - name: Build with dotnet
+      run: dotnet publish -c debug -r linux-x64 /p:PublishSingleFile=true
+    - name: Upload artifact
+      uses: actions/upload-artifact@v1.0.0
+      with:
+        # Artifact name
+        name: RSSBot-Nightly
+        # Directory containing files to upload
+        path: bin/Debug/linux-x64/publish/