patch: upgrade to java 21, netty 4.2.0.Final

Author: roccodev

Benchmarks/pom.xml

@@ -16,8 +16,8 @@
         <buildtag.prefix>git-Bukkit-</buildtag.prefix>
         <buildtag.suffix></buildtag.suffix>
         <!--PaperSpigot - Bump to 1.8 - This will haunt me -->
-        <!-- KigPaper - Java 17 -->
-        <maven.compiler.release>17</maven.compiler.release>
+        <!-- KigPaper - Java 21 -->
+        <maven.compiler.release>21</maven.compiler.release>
     </properties>
 
     <parent>

Dockerfile

@@ -1,7 +1,7 @@
 ARG git_ref
 FROM --platform=linux/amd64 ghcr.io/projectkig/kigpaper/kig-paper-builder:${git_ref} AS builder
 
-FROM eclipse-temurin:17-jre
+FROM eclipse-temurin:21-jre
 RUN apt-get update && apt-get install -y curl ca-certificates openssl git tar bash sqlite3 fontconfig \
     && adduser --disabled-password --home /home/container container && mkdir -p /home/server/plugins \
     && chown -R container:container /home/server && echo eula=true > eula.txt \

Spigot-API-Patches/0075-Upgrade-to-Java-21-upgrade-Netty-to-4.2.0.Final.patch

@@ -0,0 +1,25 @@
+From c591d99a9fcd16a17cb7c103542aee6c81de889e Mon Sep 17 00:00:00 2001
+From: RoccoDev <hey@rocco.dev>
+Date: Tue, 15 Apr 2025 21:00:48 +0200
+Subject: [PATCH] Upgrade to Java 21, upgrade Netty to 4.2.0.Final
+
+
+diff --git a/pom.xml b/pom.xml
+index 80076c6f..872732df 100644
+--- a/pom.xml
++++ b/pom.xml
+@@ -20,9 +20,9 @@
+ 
+     <properties>
+         <!--PaperSpigot - Bump to 1.8 - This will haunt me -->
+-        <!-- KigPaper - Java 17 -->
++        <!-- KigPaper - Java 21 -->
+         <additionalparam>-Xdoclint:none</additionalparam>
+-        <maven.compiler.release>17</maven.compiler.release>
++        <maven.compiler.release>21</maven.compiler.release>
+         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+     </properties>
+ 
+-- 
+2.48.1
+

Spigot-Server-Patches/0251-Upgrade-to-Java-21-upgrade-Netty-to-4.2.0.Final.patch

@@ -0,0 +1,38 @@
+From 8ebf84f1d2c2b8d03261a3510681fb40df5309b1 Mon Sep 17 00:00:00 2001
+From: RoccoDev <hey@rocco.dev>
+Date: Tue, 15 Apr 2025 21:00:48 +0200
+Subject: [PATCH] Upgrade to Java 21, upgrade Netty to 4.2.0.Final
+
+
+diff --git a/pom.xml b/pom.xml
+index cb6f3e3d1..3c615f489 100644
+--- a/pom.xml
++++ b/pom.xml
+@@ -14,12 +14,12 @@
+         <junit.version>4.13.2</junit.version>
+         <minecraft.version>1.8.8</minecraft.version>
+         <minecraft_version>1_8_R3</minecraft_version>
+-        <netty.version>4.1.86.Final</netty.version>
++        <netty.version>4.2.0.Final</netty.version>
+         <buildtag.prefix>git-Bukkit-</buildtag.prefix>
+         <buildtag.suffix></buildtag.suffix>
+         <!--PaperSpigot - Bump to 1.8 - This will haunt me -->
+-        <!-- KigPaper - Java 17 -->
+-        <maven.compiler.release>17</maven.compiler.release>
++        <!-- KigPaper - Java 21 -->
++        <maven.compiler.release>21</maven.compiler.release>
+     </properties>
+ 
+     <parent>
+@@ -262,7 +262,7 @@
+             <plugin>
+                 <groupId>net.md-5</groupId>
+                 <artifactId>specialsource-maven-plugin</artifactId>
+-                <version>1.2.3</version>
++                <version>2.0.4</version>
+                 <executions>
+                     <execution>
+                         <phase>package</phase>
+-- 
+2.48.1
+

docker/build.Dockerfile

@@ -1,4 +1,4 @@
-FROM maven:3.9.4-eclipse-temurin-17-alpine
+FROM maven:3.9.9-eclipse-temurin-21-alpine
 WORKDIR build
 COPY . .
 RUN apk add --no-cache --update git bash patch zip && git config --global user.name "Kig Docker" && git config --global user.email "docker@playkig.com" && bash build.sh

docker/j9.Dockerfile

@@ -1,7 +1,7 @@
 ARG git_ref
 FROM --platform=linux/amd64 ghcr.io/projectkig/kigpaper/kig-paper-builder:${git_ref} AS builder
 
-FROM ibm-semeru-runtimes:open-17-jre
+FROM ibm-semeru-runtimes:open-21-jre
 RUN apt-get update && apt-get install -y curl ca-certificates openssl git tar bash sqlite3 fontconfig \
     && adduser --disabled-password --home /home/container container && mkdir -p /home/server/plugins \
     && chown -R container:container /home/server && echo eula=true > eula.txt \