Docker push to ECR failing

Question

Trying to learn ECR\ECS. I created a basic Web Site and built a Docker Image from it. I then tested it externally and it displays the Hello World page. Having an issue trying to push to my Docker Image to my Repository located in ECR which I confirmed is there. See below

[ec2-user@ip-172-X-X-X ~]$ docker images
REPOSITORY                                              TAG       IMAGE ID       CREATED        SIZE
XXXXXXXXXX.dkr.ecr.region.amazonaws.com/hello-world   latest    c9600a72d527   2 days ago     205MB
hello-world                                             latest    c9600a72d527   2 days ago     205MB
public.ecr.aws/docker/library/ubuntu                    18.04     f9a80a55f492   4 months ago   63.2MB

[ec2-user@ip-172-X-X-X ~]$ docker push XXXXXXXX.dkr.ecr.us-east-1.amazonaws.com/hello-world:latest
The push refers to repository [584817139776.dkr.ecr.us-east-1.amazonaws.com/hello-world]
An image does not exist locally with the tag: 584817139776.dkr.ecr.us-east-1.amazonaws.com/hello-world

Henrique Santana · Answer

Looking at the error message, I can see that it is informing that the image `584817139776.dkr.ecr.us-east-1.amazonaws.com/hello-world:latest` is not available locally and this is a requirement.

Checking the command above the error message, I could see that the image URI is a bit different. It is showing `dkr.ecr.region` instead of `dkr.ecr.us-east-1`.

I'd recommend you to use `docker tag` command to rename the image to use the expected URI.

Dylan Zenner · Answer

Did you tag your image before trying to push to ECR? The error leads me to think you forgot to tag the image before pushing https://docs.aws.amazon.com/AmazonECR/latest/userguide/docker-push-ecr-image.html#:~:text=Tag%20your%20image%20with%20the%20Amazon%20ECR%20registry%2C

Below are the steps to push an image to ECR: https://docs.aws.amazon.com/AmazonECR/latest/userguide/docker-push-ecr-image.html

Below are the steps to push an image to ECR:
https://docs.aws.amazon.com/AmazonECR/latest/userguide/docker-push-ecr-image.html

Docker push to ECR failing

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