I'm trying to set up some infrastructure using AWS ECR to store docker images. I'm just wondering if I have access to the same base images that I do in the docker hub. E.G. FROM node works in my Dockerfile after I log in to ECR. I'm just wondering where this image is getting pulled from. I can't find anything regarding a public ECR repository that stores base images. Thanks.
Asked
Active
Viewed 281 times
2
Max Paymar
- 588
- 1
- 7
- 23
1 Answers
2
The name of a Docker image identifies the repository that it comes from. For example:
docker pull aws_account_id.dkr.ecr.us-west-2.amazonaws.com/amazonlinux:latest
The registry is aws_account_id.dkr.ecr.us-west-2.amazonaws.com, the image name is amazonlinux, and the version is latest. The punctuation characters / and : separate these three components.
When you pull from Docker hub, you don't have a registry name, just an image name and version (node:latest).
When you run docker login, it adds credentials to those known by Docker. You can login to as many registries as you want. When you then run docker pull, it looks to see if it has credentials for the specific registry.
guest
- 36
- 1