Publishing to Docker Hub
In this section, we are going to publish our application image to the public Docker Hub. You can create a new account if you do not yet have one, this takes a couple of minutes.
If you clone a new copy of the project to publish it directly to the Docker Hub, don't forget to install dependencies. In all the cases you should also create a fresh build of the application to be sure the resulting image contains all the latest source code changes.
npm install
npm run build
Let's now build the image and tag it for publishing:
docker image build -t account/ng-docker:1.0 .
Note that typically you are going to replace the account prefix with your account name.
To publish the image run the next command with your account name instead of the "account" prefix:
docker push account/ng-docker:1.0
In less than a minute your image should be published and available online.