Containerization-devops

Experiment 3

Deployment of NGINX Using Official, Ubuntu-Based and Alpine-Based Docker Images

Part 1 using Nginx.

Objective

  1. To deploy NGINX using the official Docker image.
  2. To create and deploy a custom Ubuntu-based NGINX Docker image.
  3. To create and deploy a custom Alpine-based NGINX Docker image.
  4. To understand Docker image layering and base image differences.
  5. To compare image size, performance, and efficiency.

Steps / Procedure

Step 1: Pull Official NGINX Image

Download the official NGINX image from Docker Hub using:

docker pull nginx

Step 1

Step 2: Run Official NGINX Container

Step 2

Step 3: build nginx-ubuntu

Step 3

Step 4: Mapping ports.

Step 4

Step 5: Create Ubuntu-Based Dockerfile

Create a Dockerfile using Ubuntu as base image and install NGINX.

Step 5

Step 6: Build Ubuntu-Based Image

Build the custom image using:

docker build -t nginx-ubuntu .

Step 6

Step 7: Run Ubuntu-Based Container

Run the Ubuntu-based NGINX container.

docker run -d -p 8081:80 --name nginx-ubuntu-container nginx-ubuntu

Step 7

Step 8: Access Ubuntu-Based NGINX

Open browser and access:

http://localhost:8081

Step 8

Step 9: Starting nginx server

Step 9

Step 10: Build Alpine-Based Image

Build the image using:

docker build -t nginx-alpine .

Step 11

Step 11: Run Alpine-Based Container

Run the Alpine-based container.

Step 11

Step 12:

Open browser and access:

http://localhost:8082

Step 12

Step 13: Analyze Performance and Differences

Observe startup time, storage size, and efficiency of each image. Step 13

Part - 2

part2

Result

NGINX web server was successfully deployed using:

The experiment demonstrated that Alpine-based images are smaller and more lightweight, while Ubuntu-based images offer greater flexibility with increased size. The official NGINX image provides an optimized and production-ready solution.

Conclusion

This experiment highlights the importance of selecting an appropriate base image in Docker. Alpine images offer reduced size and improved efficiency, Ubuntu provides flexibility, and the official NGINX image ensures stability and production readiness. Understanding these differences helps in optimizing containerized application deployments.