Update example

example/backend/Dockerfile

@@ -1,12 +1,14 @@
-FROM gradle:7.0.2-jdk11 AS build
-COPY --chown=gradle:gradle . /home/gradle/src
-WORKDIR /home/gradle/src
-RUN gradle build --no-daemon
+FROM gradle:8-jdk17-alpine AS build
 
-FROM openjdk:11-jre-slim
+COPY . /app
+WORKDIR /app
 
-RUN mkdir /app
+RUN --mount=type=cache,id=gradle-cache,target=/root/.gradle gradle build
 
-COPY --from=build /home/gradle/src/build/libs/ /app/
+FROM eclipse-temurin:17-alpine
 
-ENTRYPOINT ["java","-jar","/app/socket-io-redis-emitter-example-backend-1.0.jar"]
+WORKDIR /app
+
+COPY --from=build /app/build/libs/ /app/
+
+ENTRYPOINT ["java", "-jar", "example-backend-1.0.0-SNAPSHOT.jar"]

example/backend/build.gradle.kts

@@ -0,0 +1,45 @@
+import org.jetbrains.kotlin.gradle.dsl.JvmTarget
+
+plugins {
+    application
+    kotlin("jvm") version "2.0.20"
+}
+
+group = "de.smartsquare"
+version = "1.0.0-SNAPSHOT"
+description = "Socket.io emitter example"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    implementation("de.smartsquare:socket-io-redis-emitter:0.14.2")
+    implementation("redis.clients:jedis:5.1.5")
+    implementation("org.slf4j:slf4j-simple:2.0.16")
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_17
+    targetCompatibility = JavaVersion.VERSION_17
+}
+
+kotlin {
+    compilerOptions {
+        jvmTarget = JvmTarget.JVM_17
+    }
+}
+
+application {
+    mainClass = "de.smartsquare.ApplicationKt"
+}
+
+tasks.withType<Jar> {
+    manifest {
+        attributes("Main-Class" to "de.smartsquare.ApplicationKt")
+    }
+
+    duplicatesStrategy = DuplicatesStrategy.EXCLUDE
+
+    from(configurations.runtimeClasspath.get().map { if (it.isDirectory) it else zipTree(it) })
+}

example/backend/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists