How to get gcloud.auth.docker-helper out of the habit to hook into non-related docker build?

Question

Sure i have gcloud CLI installed. But since when i call docker build unrelated to any gcloud actions the log prologs with

$ docker build -t ...
ERROR: (gcloud.auth.docker-helper) You do not currently have an active account selected.
Please run:

  $ gcloud auth login

to obtain new credentials, or if you have already logged in with a
different account:

  $ gcloud config set account ACCOUNT

to select an already authenticated account to use.
Sending build context to Docker daemon  5.346MB
Step 1/8 : FROM node:alpine
...

How do i disable gcloud.auth.docker-helper, b/c unrelated, while keeping gcloud installed?

P.S. Bonus if somebody has pointers/background what this underlying mechanism is and where this behaviour documented on sides of docker and/or gcloud are

Answer 1

This appears to be part of docker login configuration. Specifically the credential helpers specified in the .docker/config.json

You can check it by running: cat [User_Home_Directory]/.docker/config.json Example:

{
        "auths": {},
        "credHelpers": {
                "asia.gcr.io": "gcr",
                "eu.gcr.io": "gcr",
                "gcr.io": "gcr",
                "marketplace.gcr.io": "gcloud",
                "staging-k8s.gcr.io": "gcr",
                "us.gcr.io": "gcr"
        }
}

If you do not want to use anything that requires docker to authenticate with gcloud or gcr (e.g Container Registry), then you can remove the credential helpers from the .docker/config.json so it looks like this:

{
        "auths": {},
        "credHelpers": {
        }
}

For the Docker documentation you can check:

• docker login
• config.json properties

You can also take a look at Container Registry Authentication methods which explains how docker authenticates with gcloud.