Docker public registry push fails: Repository does not exist

I'm trying to push my docker image up into the public docker registry:

$ docker login
Username (binarybana): 
WARNING: login credentials saved in /home/jknight/.dockercfg.
Login Succeeded

$ docker images
REPOSITORY              TAG                 IMAGE ID            CREATED             VIRTUAL SIZE
binarybana/dev-fedora   latest              10c7881fbaca        24 hours ago        1.148 GB
binarybana/fedoradev    latest              10c7881fbaca        24 hours ago        1.148 GB
binarybana/fedora-dev   latest              10c7881fbaca        24 hours ago        1.148 GB
<none>                  <none>              b44397dc4c99        24 hours ago        1.148 GB
<none>                  <none>              a98c27ba4738        24 hours ago        1.141 GB
<none>                  <none>              775c74a34add        24 hours ago        1.141 GB
<none>                  <none>              2be2491d2354        24 hours ago        1.141 GB
docker.io/fedora        21                  93be8052dfb8        7 days ago          241.3 MB

$ docker push binarybana/dev-fedora

Do you really want to push to public registry? [Y/n]: Y
The push refers to a repository [docker.io/binarybana/dev-fedora] (len: 0)
FATA[0001] Repository does not exist: docker.io/binarybana/dev-fedora 

$ docker push binarybana/fedora-dev

Do you really want to push to public registry? [Y/n]: Y
The push refers to a repository [docker.io/binarybana/fedora-dev] (len: 0)
FATA[0002] Repository does not exist: docker.io/binarybana/fedora-dev 

Yet, I've already created the repository (viewable here). And I've also tried to push to repository names that I haven't already created (the first try in the example above).

I think the (len: 0) has something to do with it, but I can't google it. Also I originally created the image from a dockerfile as:

docker build -t binarybana/fedora-dev .

Thanks.

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.

I also encountered this error Repository does not exist: gcr.io/my-project-id/my-container when attempting to push an image to Google Container Registry.

My confusion came from a misunderstanding of Docker's definition of "repository".

> A repository is a set of Docker images. A repository can be shared by pushing it to a registry server. The different images in the repository can be labeled using tags.

When Docker says that a repository does not exist, it means that there is no image that it can find locally that is tagged with that registry.host/user-name/image-name combination.

Note: The Docker Hub registry is the default, so that part can be omitted if you are pushing there.

Steps to fix this issue:

1. Double check what images you have available locally.

    $ docker images
    REPOSITORY              TAG     IMAGE ID      CREATED     VIRTUAL SIZE
    gcr.io/my-proj/my-typo  v1      40c2ae2dedb8  2 days ago  427.8 MB
   

2. If there is a typo, you can run the docker tag command to fix it.

    $ docker tag gcr.io/my-proj/my-typo:v1 gcr.io/my-proj/my-cntr:v1
   

3. Now, you should be able to push the image using the complete name, including the tag.

    $ docker push gcr.io/my-proj/my-cntr:v1
   

   Note: Use gcloud docker -- push instead of docker push if you are pushing to the Google Container Registry.

If you are using Amazon AWS, before you can push your Docker images to Amazon ECR, you need to create a repository to store them in. You can create Amazon ECR repositories with the AWS Management Console, or with the AWS CLI and AWS SDKs.

To create a repository

1.) Open the Amazon ECS console at https://console.aws.amazon.com/ecs/.

2.) From the navigation bar, choose the region to create your repository in.

3.) On the Repositories page, choose Create repository.

4.) For Repository name, enter a unique name for your repository and choose Next step.

5.) Now you should be able to push to your AWS repo!

You need to use the complete image name. When you don't specify the tag while building, it's latest, so you should say

docker push binarybana/fedora-dev:latest

Adding to Santosh Gandhe's answer, if you want to push to specific repository rather than under your login name

docker tag ${image_name} docker.io/${login_name}/${remote_repo_name}:${image_name}
and then
docker push docker.io/${login_name}/${remote_repo_name}:${image_name}

Also, don't forget to do docker login first.