denied: requested access to the resource is denied docker code example

Example 1: docker unable to push repo access denied

docker tag firstimage YOUR_DOCKERHUB_NAME/firstimage

Example 2: docker unable to push repo access denied

You need to include the namespace for Docker Hub to associate it with your account.
The namespace is the same as your Docker Hub account name.
You need to rename the image to YOUR_DOCKERHUB_NAME/docker-whale.