Docker public registry push fails: Repository does not exist

Always build your image with "username" and "tag"

docker build -t <username>/dev-fedora:latest .

After building push the image

docker push <username>/dev-fedora:latest

if you are using docker.io ( dockerhub repo ), you need to tag it including the name docker.io in it.

docker tag ${image_id} docker.io/${login_name}/${image_name}

and then

docker push docker.io/${login_name}/${image_name}

is OK.

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