Docker: How to authenticate for docker push?

Question

Hi i'm trying docker push

[docker-simple-httpserver]# docker push myregistry/simplehttpserver:latest The push refers to a repository [myregistry/simplehttpserver] (len: 1) Sending image list FATA[0000] Error: Status 403 trying to push repository simplehttpserver: "{\"error\": \"Unauthorized updating repository images\"}"  

is there a way for me to specify the username and password on docker push command?

Answer 1

I would think they keep passwords off the command line for security reasons.

The way to do it is to login first then push.

https://docs.docker.com/mac/step_six/

$ docker login --username=maryatdocker [email protected] Password: WARNING: login credentials saved in C:\Users\sven\.docker\config.json Login Succeeded 

Then push

$ docker push maryatdocker/docker-whale The push refers to a repository [maryatdocker/docker-whale] (len: 1) 7d9495d03763: Image already exists c81071adeeb5: Image successfully pushed 

Answer 2

Typically you would specify your password using the interactive docker login then do a docker push.

For a non-interactive login, you can use the -u and -p flags:

docker login -u="${DOCKER_USERNAME}" -p="${DOCKER_PASSWORD}" 

The Travis CI docs for docker builds gives an example of how to automate a docker login.

See docker login for more details.