Added optional whitelist feature

Dockerfile

@@ -1,9 +1,10 @@
-FROM --platform=linux/amd64 debian:latest
+FROM --platform=linux/amd64 ubuntu:22.04
 
 # Install dependencies
 RUN apt-get update && apt-get install -y \
     screen \
     curl \
+    ufw \
     && rm -rf /var/lib/apt/lists/*
 
 # Create user
@@ -14,8 +15,12 @@ RUN su rexuiz -c 'curl https://raw.githubusercontent.com/kasymovga/rexuiz/master
 RUN su rexuiz -c 'bash /home/rexuiz/rexuiz_install.sh /home/rexuiz/Rexuiz/'
 RUN su rexuiz -c 'chmod 755 /home/rexuiz/Rexuiz/server/rexuiz-linux-dedicated-x86_64'
 
+# Copy run script
+COPY run-rexuiz.sh /usr/local/bin/run-rexuiz.sh
+RUN chmod +x /usr/local/bin/run-rexuiz.sh
+
 # Expose server port
 EXPOSE 26000/udp
 
-# Start server
-CMD ["su", "rexuiz", "-c", "/home/rexuiz/Rexuiz/server/rexuiz-linux-dedicated-x86_64"]
+# Start server with run script
+CMD ["/usr/local/bin/run-rexuiz.sh"]