Howto publish images to Depot Registry

[patent moat]

I will add answer I've got from Depot.

Depot dagger module auto saves images to Depot registry.
And Depot team added --save-tags to the module:
https://github.com/depot/daggerverse/commit/d97747009c02181764d930956cec72eaca1e9885#diff-16ab5c7cd91a7255be316c692252c1272cebfde4b7925c7c43d993066df41de0R125
so it should be possible to just use Depot dagger module