Generates '.dockercfg' file with a valid GCR access token, given a service account JSON content.
The use-case is for cases when using a CI/CD tool and you need an authenticated Docker session to Google Container Registry without much hassle.
To accomplish this simple task, this image accepts an environment
variable called GCP_SA_JSON, which it expects to contain your service
account's JSON content (NOT the path to the file!), and uses gcloud to
create an authenticated .dockercfg file, using
gcloud docker --authorize-only.
The image will print out the .dockercfg contents to stdout which
allows you to manipulate it in any way you see fit (but usually you'll
just want to redirect it to a file.)
Assuming you have a service account JSON key at my-sa-key.json, use
this command to create a .dockercfg file that will use your service
account file to access GCR:
docker run -e "GCP_SA_JSON=$(cat my-sa-key.json)" infolinks/gcloud-docker-login > ~/.dockercfg
Any contribution to the project will be appreciated! Whether it's bug reports, feature requests, pull requests - all are welcome, as long as you follow our contribution guidelines for this project and our code of conduct.