HarshPatel

Ahmedabad, Gujarat

Publishing Docker Images to Docker Hub

Now we are going to cover how to publish our Docker images onto Docker Hub.

Step 1 — Sign Up on Docker Hub

Visit:

text

https://hub.docker.com

After signing up:

Go to your profile
Navigate to the Repositories section

Step 2 — Create a New Repository

Just as on GitHub we create repositories to push our code, similarly on Docker Hub we create repositories for Docker images.

Create a new repository:

Give it a name (e.g., test-application)
Write a short description
Choose Public or Private
Click Create

Step 3 — Build the Image With Repository Name

Once the repository is created, build your image using the exact Docker Hub repository naming format:

bash

docker build -t your-username/test-application .

Step 4 — Login to Docker From Terminal

Option 1 — Username and Password

bash

docker login

Then enter:

Username
Password

when prompted.

Option 2 — Device Authentication (Browser)

bash

docker login

Docker will:

Provide a link to open in browser
Show a one-time device confirmation code
You paste the code in the browser and confirm authentication

Step 5 — Push the Image

bash

docker push your-username/test-application

What Happens During Push?

Docker uploads all image layers
Layers are reused if already present in Docker Hub cache
Only missing layers are uploaded
Image is stored in your Docker Hub repository

After Successful Push

Refresh your Docker Hub repository page.

By default:

If no tag is specified → latest tag is used

You will see:

Image name
Tag (latest)
Image size
Pull command

Example Pull Command

bash

docker pull your-username/test-application

Why This Is Powerful

Just like we pull Docker images created by others, now others can pull our image too.

Real-World Benefit

We can even delete our local project:

Remove VS Code project
Remove local files
Remove local setup

And still recover everything anytime using:

bash

docker pull your-username/test-application
docker run your-username/test-application

Key Idea

The application is no longer tied to your machine — it is packaged as a Docker image.

This means:

Portable deployment
Easy sharing
Consistent environments
No need to reinstall dependencies

Summary

Docker Hub is a registry for Docker images
Repositories store your images
docker build creates an image with your username
docker login authenticates your Docker Hub account
docker push uploads your image to Docker Hub
Anyone can now pull and run your application using Docker

PreviousNext

Publishing Docker Images to Docker Hub

Now we are going to cover how to publish our Docker images onto Docker Hub.

Step 1 — Sign Up on Docker Hub

Visit:

text

https://hub.docker.com

After signing up:

Go to your profile
Navigate to the Repositories section

Step 2 — Create a New Repository

Just as on GitHub we create repositories to push our code, similarly on Docker Hub we create repositories for Docker images.

Create a new repository:

Give it a name (e.g., test-application)
Write a short description
Choose Public or Private
Click Create

Step 3 — Build the Image With Repository Name

Once the repository is created, build your image using the exact Docker Hub repository naming format:

bash

docker build -t your-username/test-application .

Step 4 — Login to Docker From Terminal

Option 1 — Username and Password

bash

docker login

Then enter:

Username
Password

when prompted.

Option 2 — Device Authentication (Browser)

bash

docker login

Docker will:

Provide a link to open in browser
Show a one-time device confirmation code
You paste the code in the browser and confirm authentication

Step 5 — Push the Image

bash

docker push your-username/test-application

What Happens During Push?

Docker uploads all image layers
Layers are reused if already present in Docker Hub cache
Only missing layers are uploaded
Image is stored in your Docker Hub repository

After Successful Push

Refresh your Docker Hub repository page.

By default:

If no tag is specified → latest tag is used

You will see:

Image name
Tag (latest)
Image size
Pull command

Example Pull Command

bash

docker pull your-username/test-application

Why This Is Powerful

Just like we pull Docker images created by others, now others can pull our image too.

Real-World Benefit

We can even delete our local project:

Remove VS Code project
Remove local files
Remove local setup

And still recover everything anytime using:

bash

docker pull your-username/test-application
docker run your-username/test-application

Key Idea

The application is no longer tied to your machine — it is packaged as a Docker image.

This means:

Portable deployment
Easy sharing
Consistent environments
No need to reinstall dependencies

Summary

Docker Hub is a registry for Docker images
Repositories store your images
docker build creates an image with your username
docker login authenticates your Docker Hub account
docker push uploads your image to Docker Hub
Anyone can now pull and run your application using Docker

PreviousNext

Part 1: Complete Docker One Shot — End to End Guide

Part 1: Complete Docker One Shot — End to End Guide

Publishing Docker Images to Docker Hub

Publishing Docker Images to Docker Hub

Step 1 — Sign Up on Docker Hub

Step 2 — Create a New Repository

Step 3 — Build the Image With Repository Name

Step 4 — Login to Docker From Terminal

Option 1 — Username and Password

Option 2 — Device Authentication (Browser)

Step 5 — Push the Image

What Happens During Push?

After Successful Push

Example Pull Command

Why This Is Powerful

Real-World Benefit

Key Idea

Summary

Publishing Docker Images to Docker Hub

Publishing Docker Images to Docker Hub

Step 1 — Sign Up on Docker Hub

Step 2 — Create a New Repository

Step 3 — Build the Image With Repository Name

Step 4 — Login to Docker From Terminal

Option 1 — Username and Password

Option 2 — Device Authentication (Browser)

Step 5 — Push the Image

What Happens During Push?

After Successful Push

Example Pull Command

Why This Is Powerful

Real-World Benefit

Key Idea

Summary