diff --git a/debian/Dockerfile b/debian/Dockerfile
index e40a727..21ab50f 100644
--- a/debian/Dockerfile
+++ b/debian/Dockerfile
@@ -25,7 +25,7 @@ RUN chmod +x /ftemp/Install_Script.sh \
 VOLUME /foundry
 
 # TCP Port
-EXPOSE 30000
+EXPOSE ${GAME_PORT}
 
 # Run command
 CMD [ "/bin/sh", "/ftemp/Install_Script.sh" ]