v1.19.0-1.0

What's Changed

In this release, alpine image was not supported anymore.
Then, default tag v1.19.0-1.0 or v1.19-1 point to debian image, not alpine image.
This might be notable breaking changes.

• Add v1.19.0 images by @kenhys in #439
• Update README.md for v1.19.0 by @kenhys in #440
• Fix v1.xx.y-n.m tag generation by @kenhys in #441

Full Changelog: v1.18.0-1.2...v1.19.0-1.0