fix: permissions

Author: ardocrat

Dockerfile

@@ -29,7 +29,7 @@ RUN grin --testnet server config
 RUN sed -i '/^run_tui /s/=.*$/= false/' grin-server.toml
 RUN sed -i '/^api_http_addr /s/=.*$/= "0.0.0.0:13413"/' grin-server.toml
 
-RUN chmod 775 -R /root/.grin
+RUN chmod 700 -R /root/.grin
 
 VOLUME ["/root/.grin"]