Add environment variable to disable server gui

paper-server/patches/sources/net/minecraft/server/Main.java.patch

@@ -205,7 +205,7 @@
                                  worlddimensions = dedicatedserverproperties.createDimensions(worldloader_a.datapackWorldgen());
                              }
  
-@@ -225,32 +296,44 @@
+@@ -225,32 +296,45 @@
                  return;
              }
  
@@ -238,6 +238,7 @@
 +                */
 +                boolean flag2 = !optionset.has("nogui") && !optionset.nonOptionArguments().contains("nogui");
  
++                if(!Boolean.parseBoolean(System.getenv().getOrDefault("PAPER_DISABLE_SERVER_GUI", String.valueOf(false)))) // Paper - Add environment variable to disable server gui
                  if (flag2 && !GraphicsEnvironment.isHeadless()) {
                      dedicatedserver1.showGui();
                  }
@@ -255,7 +256,7 @@
              Thread thread = new Thread("Server Shutdown Thread") {
                  public void run() {
                      dedicatedserver.halt(true);
-@@ -259,6 +342,7 @@
+@@ -259,6 +343,7 @@
  
              thread.setUncaughtExceptionHandler(new DefaultUncaughtExceptionHandler(Main.LOGGER));
              Runtime.getRuntime().addShutdownHook(thread);
@@ -263,7 +264,7 @@
          } catch (Exception exception1) {
              Main.LOGGER.error(LogUtils.FATAL_MARKER, "Failed to start the minecraft server", exception1);
          }
-@@ -295,7 +379,7 @@
+@@ -295,7 +380,7 @@
      }
  
      public static void forceUpgrade(LevelStorageSource.LevelStorageAccess session, DataFixer dataFixer, boolean eraseCache, BooleanSupplier continueCheck, RegistryAccess dynamicRegistryManager, boolean recreateRegionFiles) {