chore: Update docker file

[filzrev]

This PR include following changes.

1. Specify install docfx version explicitly
   Without this setting. Docker try to use cached layer if exists. In this case it need to manually clear cache.
2. Remove unused files to reduce docker image size
   2.1. .nupkg files
   2.2. Executables for .NET 6
3. Additional Node.js installation (Required for feat: Remove Node.js runtime dependencies from docfx tools #10066)
4. Pre-Install Chromium browser

Note: By #10066) changes. directory structures are not matched to playwright.ps1 expecting structure.
So It need to create temporary symlink to run playwright.ps1.

[yufeih]

💯