Set up GH action to check PRs

Signed-off-by: Lukas Jungmann <lukas.jungmann@oracle.com>

.github/workflows/maven.yml

@@ -1,5 +1,5 @@
 #
-# Copyright (c) 2021 Contributors to the Eclipse Foundation
+# Copyright (c) 2021, 2022 Contributors to the Eclipse Foundation
 #
 # This program and the accompanying materials are made available under the
 # terms of the Eclipse Public License v. 2.0 which is available at
@@ -10,33 +10,28 @@
 # SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 #
 
-name: Fast Infoset
+name: FastInfoSet
 
 on: [push, pull_request]
 
 jobs:
   build:
-    name: Test on JDK ${{ matrix.java_version }} 
+    name: Test on JDK ${{ matrix.java_version }}
     runs-on: ubuntu-latest
 
     strategy:
       matrix:
-        java_version: [ 11, 17-ea ]
+        java_version: [ 11, 17 ]
 
     steps:
-    - name: Cache local Maven repository
-      uses: actions/cache@v2
-      with:
-        path: ~/.m2/repository
-        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-        restore-keys: |
-          ${{ runner.os }}-maven-
     - name: Checkout for build
       uses: actions/checkout@v2.3.4
     - name: Set up JDK
       uses: actions/setup-java@v2
       with:
         distribution: 'zulu'
         java-version: ${{ matrix.java_version }}
+        cache: maven
     - name: Verify
-      run: mvn -B -V -U -C -Pstaging,oss-release clean verify org.glassfish.copyright:glassfish-copyright-maven-plugin:check -Dgpg.skip=true
+      run: |
+        mvn -B -V -U -C -Pstaging,oss-release clean verify org.glassfish.copyright:glassfish-copyright-maven-plugin:check -Dgpg.skip=true -Dcopyright.ignoreyear=true

.gitignore

@@ -1 +1,3 @@
 target/
+.idea/
+*.iml