Upload Images To Docker Hub

In this lecture you will learn how to upload your first image to Docker-Hub.

Docker-Hub is an image repository, very much like Git for Files. It will store images and tags of your images in a repository.

Docker-Hub Account

For this to work you need an actual Docker Account. If you don't have one, you can either make one now or skip this lecture.

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Create an Image and upload it to Docker-Hub

Use this Dockerfile:

FROM alpine

RUN apk update && apk add curl

ENTRYPOINT [ "curl" ]

Then build the image:

docker build -t mycurl .

• This will build an image
• It will tag the image as mycurl

docker image ls

• List the images, there should be a mycurl image

docker run --rm mycurl www.google.com

• Should output the HTML from the google website

docker login

• Login to Docker-Hub
• If you don't have a user-name then create one first
• Remember your username! Let's assume it is "myUser123"

docker tag mycurl myUser123/mycurl:latest 

• Tag your image with "username/repository:tag" -> "myUser123/mycurl:latest"

docker image ls

• Lists also the new image as well, with the same container ID

docker push myUser123/mycurl:latest

• Pushes the image to docker hub

docker rmi mycurl

• Remove the "mycurl" image

docker rmi myUser123/mycurl:latest

• Remove the myUser123/mycurl:latgest image as well

docker run --rm myUser123/mycurl:latest www.google.com

• It will download the image again from docker hub from your public repository

docker rmi myUser123/mycurl:latest

• cleanup