Updating expiry date of OpenSuse Build Repository.

1. Use the existing docker image with osc tool installed. If you want, you can install it locally and follow these steps.

docker run --name=osc --rm -it rtcamp/nginx-build bash
docker exec -it osc bash

2. Extend the expiry date for the key,

osc signkey --extend home:rtCamp

3. Get the updated key,

osc signkey home:rtCamp > public.key

4. Upload to a keyserver,

gpg --import public.key
gpg --keyserver keyserver.ubuntu.com --send-key '3050AC3CD2AE6F03'