Built and deployed my first Docker container.
Performance :
without docker 1100 req/sec.
within docker : 1000 req/sec.
Therefore docker doesn't slow things down much.
Link in comment to the most practical "create how to" that I have found on net. Talks about the real thing and nothing much.
Built binaries on my Fedora desktop and deployed on to Ubuntu server.
Image size : 8 MB including dependencies.
Very low. No 200 MB upload as I expected.