Create build.yml

.github/workflows/build.yml

@@ -0,0 +1,24 @@
+name: Build Shadow
+on: [push, pull_request]
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+        strategy:
+            matrix:
+                java: [17]
+            fail-fast: true
+        steps:
+            - uses: actions/checkout@v2.3.5
+            - name: JDK ${{ matrix.java }}
+              uses: actions/setup-java@v2.3.1
+              with:
+                  java-version: ${{ matrix.java }}
+                  cache: 'gradle'
+                  distribution: 'temurin'
+            - name: Patch and build
+              run: "./createRelease.sh"
+            - uses: actions/upload-artifact@v2
+              with:
+                name: Builded Jars
+                path: build/libs