Fix Docker build: use global tsx/tsc directly instead of npm run

Dockerfile

@@ -26,14 +26,14 @@ RUN npm install --omit=dev && \
     cd ../backend && npm install && \
     cd ..
 
-# Build jison parsers (required for the game)
-RUN npm run build:parsers
+# Build jison parsers (required for the game) - use global tsx directly
+RUN tsx tools/buildJisonParser.ts
 
 # Build frontend (generates dist folder)
 RUN cd app && npm run build
 
-# Build backend TypeScript
-RUN cd backend && npm run build
+# Build backend TypeScript - use global tsc directly
+RUN cd backend && tsc
 
 # Set environment variables for Hugging Face Spaces
 ENV PORT=7860