Add docs how to work with hugo

docs/building-docs.md

@@ -0,0 +1,36 @@
+---
+title: "Building the documentation"
+date: 2020-07-27T08:39:38+00:00
+weight: 99
+geekdocRepo: https://github.com/owncloud/ocis
+geekdocEditPath: edit/master/docs
+geekdocFilePath: building-docs.md
+---
+
+{{< toc >}}
+
+## Buildling the documentation
+
+Following steps can be applied for every oCIS extension repository.
+
+### Setting up
+
+- Install [hugo](https://gohugo.io/getting-started/installing/)
+- Run `make docs`
+
+### Viewing the documentation
+
+To view the rendered docs in the browser run:
+```bash
+cd hugo
+hugo -D server
+```
+
+Then open "http://localhost:1313/"
+
+When making changes to the docs, run `make docs` again and the server will pick up the changes and reload the page automatically
+
+### Deploying the documentation
+
+The documentation is automatically deployed from the master branch to https://owncloud.github.io/phoenix/
+