Obviously, that's what the "arms race" refers to. Birds used to have very strong arms which they used while racing in their super-fast arm bikes.
If you want this to be helpful, please consider adding a bit of explanation. Not everyone is familiar with Docker or setting up a dockerised service, and for a person already familiar with it this text doesn't seem to be very useful...
If you enjoyed it, I've collected a couple of others: https://untalkative.one/reading:2019:good-stories
I exchange memes with a married guy. I'm also a married guy. 😬