Merge lp:~yrke/tapaal/github-actions into lp:tapaal

[Kenneth Yrke Jørgensen]

=== added directory '.github'
=== added directory '.github/workflows'
=== added file '.github/workflows/build.yml'
--- .github/workflows/build.yml	1970-01-01 00:00:00 +0000
+++ .github/workflows/build.yml	2021-03-24 10:07:55 +0000
@@ -0,0 +1,49 @@
+name: Java CI with Gradle
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: 11
+
+    - name: Cache Gradle packages
+      uses: actions/cache@v2
+      with:
+        path: |
+          ~/.gradle/caches
+          ~/.gradle/wrapper
+        key: ${{ runner.os }}-gradle-${{ hashFiles('**/*.gradle*', '**/gradle-wrapper.properties') }}
+        restore-keys: |
+          ${{ runner.os }}-gradle-
+    
+    - name: Install xvfb
+      run: |
+        sudo apt-get install -y xvfb
+    
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+
+    - name: Build with Gradle
+      #Run in xvfb buffer, https://jxbrowser-support.teamdev.com/docs/guides/x-server-in-headless-linux.html
+      run: xvfb-run --server-args="-screen 0 800x600x24+32" ./gradlew -Djava.awt.headless=false build 
+
+    - name: Cleanup Gradle Cache
+      # Remove some files from the Gradle cache, so they aren't cached by GitHub Actions.
+      # Restoring these files from a GitHub Actions cache might cause problems for future builds.
+      run: |
+        rm -f ~/.gradle/caches/modules-2/modules-2.lock
+        rm -f ~/.gradle/caches/modules-2/gc.properties
+    
+