fix owner

services/carbeat/Dockerfile

@@ -26,7 +26,7 @@ COPY chall/ /home/ctfuser/chall
 COPY ./entrypoint.sh /entrypoint.sh
 
 RUN chmod +x /entrypoint.sh /home/ctfuser/chall/run.sh && \
-    chown -R root:root /home/ctfuser/chall && chmod -R 555 /home/ctfuser/chall
+    chown -R ctfuser:ctfuser /home/ctfuser/chall && chmod -R 755 /home/ctfuser/chall
 
 EXPOSE 9000 22
-CMD ["/entrypoint.sh"]
+CMD ["/entrypoint.sh"]