trying to setup gradle tests workflow

Author: ktoso

.github/workflows/pull_request.yml

@@ -1,16 +1,24 @@
 name: pull_request
 
 on:
-    pull_request:
-      types: [opened, reopened, synchronize]
+  pull_request:
+    types: [ opened, reopened, synchronize ]
 
 jobs:
-   tests:
-        name: tests
-        uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
-        with:
-          exclude_swift_versions: "[{\"swift_version\": \"5.8\"}, {\"swift_version\": \"5.9\"}, {\"swift_version\": \"5.10\"}]"
-          pre_build_command: "apt-get update -y -q && apt-get install -y -q openjdk-21-jdk make"
-          build_command: "make"
-          env_vars: |
-            JAVA_HOME="/usr/lib/jvm/java-21-openjdk-amd64"
+  test-java:
+    name: test-java
+    uses: actions/setup-java@v4
+    with:
+      distribution: 'zulu'
+      java-version: '22'
+      cache: 'gradle'
+    run: ./gradlew build --no-daemon
+  test-swift:
+    name: test-swift
+    uses: swiftlang/github-workflows/.github/workflows/swift_package_test.yml@main
+    with:
+      exclude_swift_versions: "[{\"swift_version\": \"5.8\"}, {\"swift_version\": \"5.9\"}, {\"swift_version\": \"5.10\"}]"
+      pre_build_command: "./scripts/install_jdk.sh"
+      build_command: "make"
+      env_vars: |
+        JAVA_HOME="/usr/lib/jvm/java-21-openjdk-amd64"

docker/Dockerfile

@@ -36,7 +36,7 @@ RUN if [ "$JDK_SHA" != "$EXPECT_JDK_SHA" ]; then  \
           echo "JDK SHA is correct."; \
         fi
 # Extract and verify the JDK installation
-RUN tar xzvf jdk.tar.gz && rm jdk.tar.gz && mv jdk-23 jdk
-RUN /jdk/bin/java -version
-ENV JAVA_HOME="/jdk"
-ENV PATH="$PATH:/jdk/bin"
+RUN tar xzvf jdk.tar.gz && rm jdk.tar.gz && mkdir -p /usr/lib/jvm; mv jdk-23 /usr/lib/jvm/openjdk-23
+ENV JAVA_HOME="/usr/lib/jvm/openjdk-23"
+ENV PATH="$PATH:/usr/lib/jvm/openjdk-23/bin"
+RUN /usr/lib/jvm/openjdk-23/bin/java -version