Add DO demo info (#5639)

README.md

@@ -3,6 +3,7 @@
 [![Documentation Status](https://img.shields.io/github/deployments/paperless-ngx/paperless-ngx/github-pages?label=docs)](https://docs.paperless-ngx.com)
 [![codecov](https://codecov.io/gh/paperless-ngx/paperless-ngx/branch/main/graph/badge.svg?token=VK6OUPJ3TY)](https://codecov.io/gh/paperless-ngx/paperless-ngx)
 [![Chat on Matrix](https://matrix.to/img/matrix-badge.svg)](https://matrix.to/#/%23paperlessngx%3Amatrix.org)
+[![demo](https://cronitor.io/badges/ve7ItY/production/W5E_B9jkelG9ZbDiNHUPQEVH3MY.svg)](https://demo.paperless-ngx.com)
 
 <p align="center">
   <picture>
@@ -20,6 +21,8 @@ Paperless-ngx is a document management system that transforms your physical docu
 
 Paperless-ngx is the official successor to the original [Paperless](https://github.com/the-paperless-project/paperless) & [Paperless-ng](https://github.com/jonaswinkler/paperless-ng) projects and is designed to distribute the responsibility of advancing and supporting the project among a team of people. [Consider joining us!](#community-support)
 
+Thanks to the generous folks at [DigitalOcean](https://m.do.co/c/8d70b916d462), a demo is available at [demo.paperless-ngx.com](https://demo.paperless-ngx.com) using login `demo` / `demo`. _Note: demo content is reset frequently and confidential information should not be uploaded._
+
 - [Features](#features)
 - [Getting started](#getting-started)
 - [Contributing](#contributing)
@@ -30,6 +33,16 @@ Paperless-ngx is the official successor to the original [Paperless](https://gith
 - [Affiliated Projects](#affiliated-projects)
 - [Important Note](#important-note)
 
+<p align="right">This project is supported by:<br/>
+  <a href="https://m.do.co/c/8d70b916d462" style="padding-top: 4px; display: block;">
+    <picture>
+      <source media="(prefers-color-scheme: dark)" srcset="https://opensource.nyc3.cdn.digitaloceanspaces.com/attribution/assets/SVG/DO_Logo_horizontal_white.svg" width="140px">
+      <source media="(prefers-color-scheme: light)" srcset="https://opensource.nyc3.cdn.digitaloceanspaces.com/attribution/assets/SVG/DO_Logo_horizontal_black_.svg" width="140px">
+      <img src="https://opensource.nyc3.cdn.digitaloceanspaces.com/attribution/assets/SVG/DO_Logo_horizontal_black_.svg" width="140px">
+    </picture>
+  </a>
+</p>
+
 # Features
 
 <picture>