What is the missing step in deploying a Docker container to lOx?

Refer to the exhibit.

What is the missing step in deploying a Docker container to lOx?
A . Pull/push the image to the Docker registry,
B . Build the package.yam! file.
C . Build the package.cert file to sign the app ,
D . Log in to Device Manager.

Answer: B

Explanation:

Reference:

https://www.cisco.com/c/en/us/support/docs/routers/1101-industrial-integrated-services-router/214383-build-and-deploy-a-docker-iox-package-fo.html

https://www.ciscolive.com/c/dam/r/ciscolive/apjc/docs/2017/pdf/DEVNET-2039.pdf