How to setup VS Code for Ruby development

After some trial and error with the various extensions available for Ruby, I've found the following combination to work well:

Ruby for debugging, syntax highlighting and linting. I use these VS Code User Settings:

"ruby.useLanguageServer": true,
"ruby.lint": {
  "ruby": true
}

Solargraph for intellisense and autocomplete.

endwise for wisely adding end to code structures. (Inspired by tpope's endwise.vim)

Prettier and plugin-ruby for formatting.

Prettier plugin support is on the way, but for now we have to do this

Bonus for Rails: PostgreSQL for writing queries within the editor.