Kong on Azure Containers

Team,

We have installed kong on Azure containers
When I do setting on kong.config using CLI on that container and restart the Kong with command, the .config file which I created using
cp /etc/kong/kong.conf.default /etc/kong/kong.conf
And made changes on this gets vanished. Even this kong.conf file get deleted.

I am very confuse and tired as I have not found any solution for many days

Thanks
Sachin