Using this credential helper prevents you from pulling from docker hub

[sterling000]

pretty easy to reproduce
follow the setup instructions
configure with the credsStore ecr-login (the credHelpers never worked for me)
pull an image from your private repo
then call docker login

Observe Error:
Error saving credentials: error storing credentials - err: exit status 1, out: not implemented

[86ribeiro]

Same problem here.

[niroliyanage]

same issue here had to override the DOCKER_CONFIG='~./docker/bla.json' to get it to work with other repositories

[hannes-ucsc]

What fixed this for me was to change

{
	"credsStore": "ecr-login"
}

to

{
	"credHelpers": {
		"public.ecr.aws": "ecr-login",
		"<aws_account_id>.dkr.ecr.<region>.amazonaws.com": "ecr-login"
	}
}

in ~/.docker/config.json so that Docker doesn't attempt to store docker.io (or any other registry's) credentials using this helper.

Both options are mentioned in the documentation but the latter is more interoperable, so I think the documentation should be updated to give more prominence to it. Many people will come here with limited knowledge of Docker credential helpers, as did I, and it will take them a while to understand what's going on.

[xocasdashdash]

@hannes-ucsc are you able to still do:

 aws --region us-east-1 ecr get-login-password | docker login --username AWS --password-stdin XXXX.dkr.ecr.us-east-1.amazonaws.com

with that config? because i have that exact config and it's failing with

Error saving credentials: error storing credentials - err: exit status 1, out: `not implemented`

[hannes-ucsc]

I don't know. I don't use docker login in contexts where the helper is installed. I thought the point of this helper is that one doesn't need to use docker login.