Use pypi khoj to fix docker builds and dockerize github workflow

- Instead of building the package locally like before
  The issue started since moving to dynamic git based versioning with hatch-vcs
  This should reduce image size of docker builds too

- Also move to ubuntu image since pyqt6 builds available on it, so do
  not need to build it locally for image

- This s

.dockerignore

@@ -6,4 +6,5 @@ docs/
 tests/
 build/
 dist/
+scripts/
 *.egg-info/