adding instructions

Author: unisbadri

README.md

@@ -1 +1,20 @@
-# ReactJSDockerBuild
+# ReactJS Docker Image
+
+Build docker image for ReactJS application.
+
+## Build Image
+To build image run this command (__change the tag name & version with your preferred tag name & version__).
+
+`$ docker build . -t myorganization/myimage:1.0.0`
+
+## Running Container from Image
+
+To create a container from the image, run this command (__change the tag name & version with your preferred tag name & version__).
+
+`$ docker run -d -p 3000:3000 --name reactjs-app myorganization/myimage:1.0.0`
+
+Then you can access the app from the browser with this url: `http://127.0.0.1:3000`
+
+## Dockerhub image
+
+This repository is proven by running build in Dockerhub, you can see the result [here](https://hub.docker.com/r/namikazebadri/reactjs-app).