Spring external config

core/src/main/java/mc/core/Main.java

@@ -9,11 +9,25 @@ import mc.core.network.Server;
 import mc.core.network.StartServerException;
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
+import org.springframework.context.support.FileSystemXmlApplicationContext;
+
+import java.nio.file.Files;
+import java.nio.file.Paths;
 
 @Slf4j
 public class Main {
+    private static ApplicationContext createContext() {
+        final String springXml = System.getProperty("springConfig", "./spring.xml");
+
+        if (Files.exists(Paths.get(springXml))) {
+            return new FileSystemXmlApplicationContext(springXml);
+        } else {
+            return new ClassPathXmlApplicationContext("spring.xml");
+        }
+    }
+
     public static void main(String[] args) {
-        ApplicationContext appContext = new ClassPathXmlApplicationContext("spring.xml");
+        ApplicationContext appContext = createContext();
 
         GameLoop gameLoop = appContext.getBean(GameLoop.class);
         gameLoop.start();