Merge pull request #583 from c9s/move-frontend-doc

doc: add frontend development setup doc

README.md

@@ -557,13 +557,6 @@ streambook.BindStream(stream)
 6. Push your changes to your fork.
 7. Send a pull request.
 
-### Setup frontend development environment
-
-```sh
-cd frontend
-yarn install
-```
-
 ### Testing Desktop App
 
 for webview

doc/development/frontend.md

@@ -0,0 +1,40 @@
+### Setup frontend development environment
+
+You will need yarn to install the dependencies:
+
+```shell
+npm install -g yarn
+```
+
+And you need next.js:
+
+```shell
+npm install -g next@11
+```
+
+The frontend files are in the `frontend/` directory:
+
+```sh
+cd frontend
+```
+
+Run `yarn install` to install the dependencies:
+
+```shell
+yarn install
+```
+
+Build and compile the frontend static files:
+
+```shell
+yarn export
+```
+
+To start development, use:
+
+```shell
+yarn dev
+```
+
+
+