misc: add v2 runme demo to README (#2811)

* added demo runner on runme.io

* change to readme, added button indside

* Change to version 2 of docusaurus

* V2 (#1)

* try v2

* port change

* put path to folder

* change running string

Co-authored-by: Cloud User <belokonm@gmail.com>

Co-authored-by: MishaJexia <44843719+MishaJexia@users.noreply.github.com>

.runme/Dockerfile.runme

@@ -0,0 +1,6 @@
+FROM node:12.10.0
+WORKDIR /app
+RUN npx @docusaurus/init@next init website classic  
+RUN npm install http-server -g
+RUN cd website && npm run build
+ENTRYPOINT http-server ./website/build/ -p 80 -a 0.0.0.0

.runme/config.yaml

@@ -0,0 +1,10 @@
+version: 1.0
+publish: app
+services:
+  app:
+    build:
+      type: dockerfile
+      config: ./.runme/Dockerfile.runme
+    ports:
+      - container: 80
+        public: 80

README.md

@@ -32,6 +32,10 @@ Docusaurus is available as the [`docusaurus` package](https://www.npmjs.com/pack
 
 We have also released the [`docusaurus-init` package](https://www.npmjs.com/package/docusaurus-init) to make [getting started](https://docusaurus.io/docs/en/installation/) with Docusaurus even easier.
 
+## Demo
+
+[![Runme](https://runme.io/static/button.svg)](https://runme.io/run?app_id=0dd80306-47bb-4e80-95dc-dc95eb05d3fd)- Click on button to see quick-start demo
+
 ## Contributing
 
 We've released Docusaurus because it helps us better scale and supports the many OSS projects at Facebook. We hope that other organizations can benefit from the project. We are thankful for any contributions from the community.