reuse old project

build.gradle

@@ -1,9 +1,11 @@
 plugins {
     id 'java'
+    id "com.github.johnrengelman.shadow" version "7.1.0"
 }
 
-group = 'eu.mhsl.craftattack.worldmuseum'
-version = '1.0-SNAPSHOT'
+group = '' +
+        ''
+version = '1.0'
 
 repositories {
     mavenCentral()
@@ -11,11 +13,13 @@ repositories {
 }
 
 dependencies {
-    testImplementation platform('org.junit:junit-bom:5.9.1')
-    testImplementation 'org.junit.jupiter:junit-jupiter'
+
     implementation 'com.github.Minestom:Minestom:8ad2c7701f'
 }
 
-test {
-    useJUnitPlatform()
+jar {
+    manifest {
+        attributes 'Main-Class': 'eu.mhsl.craftattack.worldmuseum.Main',
+                "Multi-Release": true
+    }
 }