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Publishing to Docker Hub

Let's publish the Go server we Dockerized up to Docker Hub.

Assignment

Rebuild the Go binary:

GOOS=linux GOARCH=amd64 go build

Rebuild the image. You'll need to use a name that corresponds to your namespace on Docker Hub. Swap out USERNAME for your lowercase Docker Hub username.

docker build . -t USERNAME/goserver

Run your image in a container to make sure it still works:

docker run -p 8991:8991 USERNAME/goserver

Push the image to Docker Hub:

docker push USERNAME/goserver

If everything worked, you should be able to refresh your repositories page and see your new image! By default, Docker Hub makes your images public, so anyone can pull them.

Answer the question.

Tip

If you're having trouble because you aren't signed in to Docker Hub, you can sign in by using the Docker Desktop GUI, or by running docker login in the command line.