Add the ability to publish docker images non-interactively.

[trhodeos]

Fixes #17613

[trhodeos]

Not sure why/how I closed this... Reopening.

[huonw]

Thanks for contributing, and thanks for waiting for a review.

We've just branched for 2.25, so merging this pull request now will come out in 2.26, please move the release notes updates to docs/notes/2.26.x.md. Thank you!

[cburroughs]

Pulling in some comments from chat:

I was able to sustain 1 Gbps for several minutes of pushing, I have this spiffy workunit trace:

So I'm feeling pretty good that the pushing really is working in parallel, yeah! 🚀

Same way to still print the lines:

a492eee5e559: Layer already exists 
7576b00d9bb1: Layer already exists 
2260218218a7: Already exists 
3fd67c6ea721: Layer already exists 
be92f6592e6d: Layer already exists 
dcaa1b9153e7: Layer already exists 
32b550be6cb6: Layer already exists 
2d2bff40c204: Layer already exists 
8630e3071c88: Layer already exists 
6cb66cb5f02b: Layer already exists 
35af2a7690f2: Layer already exists 

And nit, move the release note to the 2.26.x file.

[cburroughs]

oh and you probably saw this, but src/python/pants/core/goals/publish_test.py is failing in the latest commit.

Thanks for flying this to the finish line!

[trhodeos]

Ok, tests and docs are updated / fixed