flask-docker-jenkins-connectivity

A very simple blog application in flask build over docker to show its connectivity with jenkins

Clone this project using the command:

    git clone https://github.com/himanshunikhare/flask-docker-jenkins-connectivity.git

How to run

Build image from dockerfile

    docker build -t my_docker_flask:latest .

Run docker image build using above command

    docker run -d -p 5000:5000 my_docker_flask:latest

Open your favourite browser and paste the below link:      http://127.0.0.1:5000/

Creating and CI/CD pipeline

• Install and run jenkins in localhost

  using this official documentation.

  In my case being an arch user, i followed this article to install and run jenkins

  Make sure to install docker and github plugin is installed.

• Expose your localhost using ngrok

  Download ngrok and run:

   ngrok http 8090
  

• Setting up github webhook

  Go inside

  Settings > Webhooks

  Write

  Payload: xyz.ngrok.io/github-webhook/ Content type: application/json Save

• Setup jenking pipeline

  Make sure that you change the registry name and git url from Jenkinsfile in my repo

  • Open Jenkins using xyz3024d.ngrok.io

  • Goto Manage Jenkins > Manage Credentials

    • Click on Add credentials
      • Enter your Dockerhub Username and Password
      • Give ID as: dockerhub_id (specified in Jenkinsfile)
      • Give some description and Save

  • Click on New Item

  • Enter Item Name and Select Pipeline

    • Select GitHub hook trigger for GITScm polling
    • In Pipeline tab select Pipeline script from SCM
    • Enter repository URL
    • Write Jenkinsfile (or the name of your jenkinsfile)

  • Save and Apply

Technology used:

• Docker

  Docker is an application build and deployment tool. It is based on the idea of that you can package your code with dependencies into a deployable unit called a container.

• Flask

  Flask_ is a lightweight WSGI web application framework. It is designed to make getting started quick and easy, with the ability to scale up to complex applications

• Jenkins

  Jenkins_ – an open source automation server which enables developers around the world to reliably build, test, and deploy their software.

• Ngrok

  Ngrok exposes local servers behind NATs and firewalls to the public internet over secure tunnels.