Devops Certification Training : How to Dockerise a simple Web Application / Host on a Nginx Server

How to Dockerise a simple Web Application / Host on a Nginx Server

Nginx, stylized as NGINX or nginx or NginX, is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. This can be used to host web Applications.

In this lab exercise, you will learn how to create a simple web App, Create an Nginx container and deploy that App into the container. And view the results on your browser

Prerequisites:

Install Docker

Step 1: Create the web App(HTML)

Log into your docker machine

Create the Html file using Vi Editor

$ vi index.html

<!DOCTYPE html>

<head>

<title>Smashing Champions Web App!</title>

</head>

<body >

We are champions

we are champions!

</body>

</html>

Copy the Above code and paste on the editor. You can edit the body section as u please

Step 2: Create Dockerfile

open vi editor and copy the below code

$ vi Dockerfile

#FROM is the base image for which we will run our application
FROM nginx:latest

# Copy files and directories from the application
COPY index.html /usr/share/nginx/html

# Tell Docker we are going to use this port
EXPOSE 80

The above Docker file will create a base image from centos6 operating system, install nginx web server on it, then Copy the index.html file we created into "/usr/share/nginx/html" folder of the centos container. The image will be exposed in Port 80

Step 3: Create the docker image: You can tag it with -t , tag it any name you want. but we will use webapp

$ docker build -t webapp .

List docker images

$ docker images