SOLR-17908 Use Java 25 in Docker image (#3782)

Author: janhoy

dev-docs/gradle-help/docker.txt

@@ -17,7 +17,7 @@ gradlew dockerBuild
 The docker build task accepts the following inputs, all accepted via both Environment Variables and Gradle Properties.
 
 Base Docker Image: (The docker image used for the "FROM" in the Solr Dockerfile)
-   Default: "eclipse-temurin:21-jre-noble"
+   Default: "eclipse-temurin:25-jre-noble"
    EnvVar: SOLR_DOCKER_BASE_IMAGE
    Gradle Property: -Psolr.docker.baseImage
 

gradle/libs.versions.toml

@@ -79,6 +79,7 @@ cuvs-lucene = "25.10.0"
 cybozulabs-langdetect = "1.1-20120112"
 decompose = "3.3.0"
 diffplug-spotless = "7.2.1"
+dockerfile-baseimage-java = "25"
 dropwizard-metrics = "4.2.26"
 eclipse-ecj = "3.39.0"
 eclipse-jetty = "12.0.27"

solr/docker/build.gradle

@@ -22,7 +22,7 @@ import org.apache.commons.codec.digest.DigestUtils
 description = 'Solr Docker image'
 
 apply plugin: 'base'
-def javaVersion = libs.versions.java.min.get()
+def javaVersion = libs.versions.dockerfile.baseimage.java.get()
 // Solr Docker inputs
 def dockerImageSolrDist = "${ -> propertyOrEnvOrDefault("solr.docker.dist", "SOLR_DOCKER_DIST", 'full') }"
 def isDistSlim = {String dist -> dist.toLowerCase(Locale.ROOT) == "slim"}

solr/solr-ref-guide/modules/upgrade-notes/pages/major-changes-in-solr-10.adoc

@@ -189,7 +189,7 @@ Solr upgraded to Jetty 12.x from 10.x as Jetty 10 and 11 have reached end-of-lif
 
 === Docker
 
-The OS version of the official Docker image and provided Dockerfile has been upgraded to Ubuntu 24 (noble) from Ubuntu 22 (jammy).
+The OS version of the official Docker image and provided Dockerfile has been upgraded to Ubuntu 24 (noble) from Ubuntu 22 (jammy). The Docker base image is `eclipse-temurin:25-jre-noble`.
 
 === Miscellaneous