Update Dockerfile, pom.xml

Dockerfile

@@ -1,4 +1,4 @@
-FROM maven:3.5.4-jdk-8-alpine as builder
+FROM maven:3.8-eclipse-temurin-21-alpine as builder
 MAINTAINER [email protected]
 
 WORKDIR /home
@@ -7,7 +7,7 @@ COPY ./src ./src
 
 RUN mvn clean package assembly:single
 
-FROM eclipse-temurin:11-jre-alpine
+FROM eclipse-temurin:21-jre-alpine
 
 COPY --from=builder /home/src/main/resources/logback.xml /home
 COPY --from=builder /home/target/jpo-aws-depositor-jar-with-dependencies.jar /home

pom.xml

@@ -8,8 +8,8 @@
   <packaging>jar</packaging>
   <name>JPO AWS Depositor</name>
   <properties>
-    <maven.compiler.source>1.8</maven.compiler.source>
-    <maven.compiler.target>1.8</maven.compiler.target>
+    <maven.compiler.source>21</maven.compiler.source>
+    <maven.compiler.target>21</maven.compiler.target>
   </properties>
   <dependencies>
     <dependency>
@@ -81,7 +81,7 @@
         <!-- Build an executable JAR -->
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-assembly-plugin</artifactId>
-        <version>2.4</version>
+        <version>3.5.0</version>
         <configuration>
           <archive>
             <manifest>