Create build.yml

.github/workflows/build.yml

@@ -0,0 +1,26 @@
+name: Build JAR
+
+on:
+  push:
+    branches: [ main ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up JDK 17
+      uses: actions/setup-java@v2
+      with:
+        java-version: '17'
+    - name: Grant execute permission for gradlew
+      run: chmod +x gradlew
+    - name: Get project version
+      run: echo "version=$(grep '^version' build.gradle | cut -d' ' -f3 | tr -d '\"')" >> $GITHUB_ENV
+    - name: Build with Gradle
+      run: ./gradlew build -x test
+    - name: Publish artifact
+      uses: actions/upload-artifact@v2
+      with:
+        name: FoliaFlow-${{ env.version }}-${{ github.sha }}
+        path: build/libs/FoliaFlow-${{ env.version }}.jar