Setup github actions

.github/workflows/build.yml

@@ -0,0 +1,14 @@
+name: Build mockserver
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up JDK 8
+        uses: actions/setup-java@v3
+        with:
+          java-version: '8'
+          distribution: 'temurin'
+      - name: Build with Maven
+        run: ./mvnw package