Update workflow

.github/workflows/build.yml

@@ -1,40 +1,31 @@
-# Automatically build the project and run any configured tests for every push
-# and submitted pull request. This can help catch issues that only occur on
-# certain platforms or Java versions, and provides a first line of defence
-# against bad commits.
-
-name: build
-on: [pull_request, push]
-
+name: Build
+on: [ push, pull_request ]
 jobs:
   build:
     strategy:
       matrix:
-        # Use these Java versions
-        java: [
-          17,    # Current Java LTS & minimum supported by Minecraft
-        ]
-        # and run on both Linux and Windows
-        os: [ubuntu-22.04, windows-2022]
-    runs-on: ${{ matrix.os }}
+        java: [ 21-jdk ]
+    runs-on: ubuntu-20.04
+    container:
+      image: eclipse-temurin:${{ matrix.java }}
+      options: --user root
     steps:
-      - name: checkout repository
-        uses: actions/checkout@v3
-      - name: validate gradle wrapper
-        uses: gradle/wrapper-validation-action@v1
-      - name: setup jdk ${{ matrix.java }}
-        uses: actions/setup-java@v3
+      - uses: actions/checkout@v3
         with:
-          java-version: ${{ matrix.java }}
-          distribution: 'microsoft'
-      - name: make gradle wrapper executable
-        if: ${{ runner.os != 'Windows' }}
+          fetch-depth: 0
+
+      - name: Validate Gradle wrapper
+        uses: gradle/wrapper-validation-action@v1
+
+      - name: Make Gradle wrapper executable
         run: chmod +x ./gradlew
-      - name: build
-        run: ./gradlew build
-      - name: capture build artifacts
-        if: ${{ runner.os == 'Linux' && matrix.java == '17' }} # Only upload artifacts built from latest java on one OS
+
+      - name: Build
+        run: ./gradlew check build --stacktrace --parallel
+
+      - name: Upload artifacts
         uses: actions/upload-artifact@v3
         with:
           name: Artifacts
-          path: build/libs/
+          path: build/libs/
+          retention-days: 5