Update to Gradle 8.10.2 and Java 21 (#8)

Author: aleximenes

Dockerfile

@@ -1,4 +1,4 @@
-FROM gradle:8.6.0-jdk17-alpine AS build
+FROM gradle:8.10.2-jdk21-alpine AS build
 USER gradle
 WORKDIR /home/gradle/workdir
 
@@ -8,7 +8,7 @@ COPY --chown=gradle:gradle src src
 
 RUN gradle bootJar
 
-FROM eclipse-temurin:17-jre-alpine
+FROM eclipse-temurin:21-jre-alpine
 VOLUME /tmp
 RUN addgroup app
 RUN adduser --no-create-home --ingroup app --disabled-password app

build.gradle

@@ -21,8 +21,8 @@ jar {
 }
 
 java {
-    sourceCompatibility = 17
-    targetCompatibility = 17
+    sourceCompatibility = 21
+    targetCompatibility = 21
 }
 
 repositories {

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists