how to push changes to docker hub?

Question

1) I have pushed image to docker hub with

docker push ucanmiracle/docker-learn:node-test-image

2) Added changes to my project file

3) pushing docker image with

docker push ucanmiracle/docker-learn:node-test-image1

But project changes didn't applied. How to properly push updates to docker hub?

Answer 1

You don't push project files to the registry, you push an image, which needs to be built from the project files first.

1: Run docker build -t ucanmiracle/docker-learn:node-test-image1 . It will build the image from the Dockerfile in current directory and tag it as ucanmiracle/docker-learn:node-test-image1.

2: Then you run docker push ucanmiracle/docker-learn:node-test-image1 to push the image to Docker Hub.

Check this Link for more on building Docker images.