Update Dockerfile

Dockerfile

@@ -23,10 +23,10 @@ COPY supervisord.conf /etc/supervisor/conf.d/supervisord.conf
 # Build NestJS Backend
 RUN cd /app/projects/telegram-send-demo/backend && npm ci && npm run build
 
-# Build React Frontend with empty VITE_API_URL for relative routing
-RUN cd /app/projects/telegram-send-demo/frontend \
-    && ENV VITE_API_URL="" npm ci \
-    && ENV VITE_API_URL="" npm run build
+# Set the environment variable using the Dockerfile directive
+ENV VITE_API_URL=""
+# Build React Frontend
+RUN cd /app/projects/telegram-send-demo/frontend && npm ci && npm run build
 
 # Fix permissions for non-root HF user (ID 1000)
 RUN chown -R user:user /app /etc/caddy /var/log/supervisor /var/lib/caddy /var/log/caddy