Doc: Document how to build and translate the help pages

packages/doc-builder/README.md

@@ -2,40 +2,38 @@
 
 This website is built using [Docusaurus 2](https://docusaurus.io/), a modern static website generator.
 
-### Installation
+## Development
 
-```
-$ yarn
+### Generating the MDX files
+
+From `packages/tools`, run `node website/processDocs.js --env dev`
+
+### Getting the translations
+
+```shell
+CROWDIN_PERSONAL_TOKEN=..... yarn crowdinDownload
 ```
 
-### Local Development
+### Building the doc
 
-```
-$ yarn start
+From `packages/doc-builder`, run:
+
+```shell
+WEBSITE_BASE_URL=http://localhost:8077 yarn buildDev
 ```
 
-This command starts a local development server and opens up a browser window. Most changes are reflected live without having to restart the server.
+Or to build a particular locale:
 
-### Build
-
-```
-$ yarn build
+```shell
+WEBSITE_BASE_URL=http://localhost:8077 yarn buildDev --locale fr
 ```
 
-This command generates static content into the `build` directory and can be served using any static contents hosting service.
+`processDocs.js` will also build everything by default, but it takes a long time, so using the above commands is convenient for dev.
 
-### Deployment
+## Translation
 
-Using SSH:
+Translation is done using https://crowdin.com/
 
-```
-$ USE_SSH=true yarn deploy
-```
+## Building for production
 
-Not using SSH:
-
-```
-$ GIT_USER=<Your GitHub username> yarn deploy
-```
-
-If you are using GitHub pages for hosting, this command is a convenient way to build the website and push to the `gh-pages` branch.
+This is done in `release-website.sh` from the repository https://github.com/joplin/website/