chore: move docker entrypoint to seperate script

scripts/docker-entrypoint.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+
+# Start Caddy
+caddy start --config /etc/caddy/Caddyfile &
+# Run the frontend server
+PORT=3333 HOSTNAME=0.0.0.0 node frontend/server.js &
+# Run the backend server
+cd backend && npm run prod
+# Wait for all processes to finish
+wait -n