Day-23 Project Title: Hosting a Node.js Todo Application on a Docker Container with CI/CD Pipeline and Nginx Reverse Proxy(Part-2)

Project Overview:

This project involves hosting a Node.js todo application on a Docker container using Nginx as a reverse proxy. The project includes setting up a CI/CD pipeline to automate the installation of dependencies and deployment of the application on the container.

Project Features:

The project includes the following features:

• Creation of a Dockerfile to build the Docker image for the application

• Setting up a pipeline on a CI/CD platform to automate the installation of dependencies and deployment of the application on the container

• Configuration of Nginx as a reverse proxy to forward requests from the web server to the Node.js server running on the container

• Testing of the website by going to the URL specified by the client

Project Prerequisites:

Before starting the project, the following prerequisites are required:

• A Docker installation on the system

• A GitHub account to clone the project repository

• An account on a CI/CD platform such as Jenkins, CircleCI, or GitHub Actions to create the pipeline

Project Steps:

1. Install Docker & Jenkins on the server where you want to host the website.

apt-get update && apt-get install docker.io

sudo usermod -aG docker jenkins
sudo systemctl restart jenkins

also set up Jenkins using your credential and make it ready.

1. Clone the node-todo-cd repository from Git using a docker file.

2. Create a new file called Dockerfile in the root directory and install nginx and clone the prerequisite of the project

# Pull base image
FROM ubuntu

# Install nginx, vim, and git and create website configuration
RUN apt-get update && \
    apt-get install -y nginx vim git && \
    mkdir /website /etc/website && \
    rm -rf /etc/nginx/sites-available/default ; \
    rm -rf /etc/nginx/sites-enabled/default ; \
    echo "daemon off;" >> /etc/nginx/nginx.conf && \
    sed -i '/^deamon/d' /etc/nginx/nginx.conf && \
    git clone https://github.com/LondheShubham153/node-todo-cicd.git /etc/website

COPY arsfile /etc/nginx/sites-available/
RUN ln -s /etc/nginx/sites-available/* /etc/nginx/sites-enabled/

# Expose port 80
EXPOSE 80

# Start nginx when container starts
CMD ["nginx"]

1. Create an nginx. conf file in the root directory of the project and add the following lines to it:

1. Create a pipeline for this and try to build it.

Now build the Project.

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For Calculator app

pipeline {
    agent any
    stages {
        stage("build image") {
            steps {
                sh 'docker build -t image1 .'
            }
        }
        stage("create container") {
            steps {
                sh 'docker run -d -p 80:80 --name Abhijeet_cont image1'
            }
        }
        stage("start nginx service") {
            steps {
                sh 'docker exec Abhijeet_cont service nginx start'
            }
        }
        stage("Install dependencies") {
            steps {
                sh 'docker exec Abhijeet_cont apt update'
                sh 'docker exec Abhijeet_cont apt-get install -y python3-venv'
                sh 'docker exec Abhijeet_cont sh -c "cd /etc/calculator && python3 -m venv env && . env/bin/activate && pip install flask==2.2.3 Jinja2==3.1.2  Werkzeug==2.2.3 MarkupSafe==2.1.2 gunicorn==19.5.0 gevent"'
            }
        }
        stage("start app") {
            steps {
                sh 'docker exec Abhijeet_cont sh -c "cd /etc/calculator && . /etc/calculator/env/bin/activate && python app.py &"'
            }
        }
    }
}

1. 1. Verify that the container is running by going to http://localhost or http://<your_server_ip> in a web browser.

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