Update Dockerfile

Dockerfile

@@ -18,13 +18,10 @@ RUN set -x \
  && npm cache clear --force \
  && chown -R rocketchat:rocketchat /app
 
-# # Install iptables
-# RUN apt-get update && \
-#     apt-get install -y iptables && \
-#     rm -rf /var/lib/apt/lists/*
-
-# Set up iptables rule to redirect port 7860 to 3000
-RUN iptables -t nat -A PREROUTING -p tcp --dport 7860 -j REDIRECT --to-port 3000
+# Install socat for port forwarding
+RUN apt-get update && \
+    apt-get install -y socat && \
+    rm -rf /var/lib/apt/lists/*
 
 USER rocketchat
 
@@ -41,7 +38,9 @@ ENV DEPLOY_METHOD=docker \
     ROOT_URL=http://localhost:3000 \
     Accounts_AvatarStorePath=/app/uploads
 
-# Expose the external port 7860
+# Expose port 7860 externally
 EXPOSE 7860
 
-CMD ["node", "main.js"]
+# Run socat to forward port 7860 to 3000 and start Rocket.Chat
+CMD socat TCP-LISTEN:7860,reuseaddr,fork TCP:localhost:3000 & \
+    node main.js