I am trying to pull a docker container from our private GCP container registry on a regular VM instance (i.e.
ubuntu-1904) running on Google Cloud, but I am getting the following error:
[email protected] ~ $ sudo docker pull example.io/docker-dev/name:v01 Error response from daemon: unauthorized: You don't have the needed permissions to perform this operation, and you may have invalid credentials. To authenticate your request, follow the steps in: https://cloud.google.com/container-registry/docs/advanced-authentication
I followed those instructions, i.e., run the
gcloud auth configure-docker command, which outputs a success message.
However, when running the
docker pull command again, I get the exact same error.
A couple of extra tests that might help to provide feedback:
- If I pull from a different registry, it works (for example,
docker run hello-worldpulls and runs the
- I tested the same command (
docker pull example.io/docker-dev/name:v01) on my local computer (Mac) instead of the vm instance and works perfectly.
- I have also created vm instances and enable the option “Deploy a container image to this VM instance”, providing the container address (
example.io/docker-dev/name:v01), and also works. However, I don’t want to use this option because it selects automatically a “Container-Optimized” boot disk, which I prefer not to use due to the limitations
What am I doing wrong? why I cannot pull docker images from my private container registry on a Ubuntu o Debian VM, even though docker seems to work very well pulling images from other repositories (docker hub)?
Thanks in advance!