Print Docker image digest
What does this MR do?
Print an immutable reference to registry image
Why was this MR needed?
To manually pull and reproduce issues, an immutable reference is needed.
Are there points in the code the reviewer needs to double check?
Yes, all of it. This is my first go at developing Go.
What are the relevant issue numbers?
This fixes #4268 (closed)
Edited by Steve Xuereb