Add test (#7)

.github/workflows/tests.yml

@@ -0,0 +1,26 @@
+name: Tests
+
+on:
+  push:
+    branches: 
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: '1.20'
+
+    - name: Install xcaddy
+      run: go install github.com/caddyserver/xcaddy/cmd/xcaddy@latest
+
+    - name: Run xcaddy build
+      run: xcaddy build --with github.com/caddy-dns/inwx=.