example usage for DOCKER_AUTH_CONFIG

[amab8901]

Hi!

I read in the docs about DOCKER_AUTH_CONFIG being used for authenticating via Docker. Can u give me examples of how this is used?

[DDtKey]

Hi @amab8901 👋

It's generally documented on our docs site and docs.rs too

DOCKER_AUTH_CONFIG allows to set a json content (just like raw content of config.json), while DOCKER_CONFIG allows to set path to your custom config file.

Content is like:

{
    "auths": { },
    "credsStore": "..."
}

[amab8901]

I haven't used docker config files before. If my username is user123 and my password is pass123, should I write the following as a value to DOCKER_AUTH_CONFIG?

{
  "auths": { 
    "username": "user123",
    "password": "pass123"
  },
  "credsStore": ""
}

[DDtKey]

Not really, "auths" represents list of registries and their configs.

You can check the one managed by docker (via docker login command). And testcontainers uses this one by default.

cat ~/.docker/config.json

• path to config depends on your docker configuration

[amab8901]

I don't have username and password stored in docker config, so doing cat ~/.docker/config.json doesn't reveal to me where I'm supposed to put the username and password in the docker config

[DDtKey]

Usually Credential Store is used and username and passwords are not part of config itself, see https://docs.docker.com/reference/cli/docker/login/