How to push multi-arch docker image built with docker-compose to ECR

Question

I want to dockerize and push my node app in development to a free tier ec2 instance. Unfortunately, they are all x86 instances and my computer is an arm based chip (M1 Apple silicon). I am using a docker-compose.yml file to build my container and also pull other dependent containers from docker hub (redis & postgres). I can't figure out a way to build the docker image to be multi arch with docker buildx, use the docker-compose file and push the generated image to ECR. And as a result of the other containers being pulled, how would that work with ECR, does that mean that the redis and postgres containers will also be pushed to ECR. Is there a better way to achieve this?

Juan_P
3 years ago
Have you tried docker buildx bake -f <dockerComposeFile> ... ? https://docs.docker.com/engine/reference/commandline/buildx_bake/ It even allows you to set the target platform within you compose file with a special x-bake tag

Petro_K · Answer

We have good blog covering multi-arch images with ECR. Have you checked that? 
https://aws.amazon.com/blogs/containers/introducing-multi-architecture-container-images-for-amazon-ecr/
As for free tier, ARM instances also have free tier, for example t4g

JohnPreston · Answer

I do multi-arch builds regularly, although not locally in that way (even though I do have arm and x86 machines). I use AWS CodeBuild which is insanely cheap for that.

See [this blog post](https://blog.compose-x.io/posts/docker-images-multi-arch-manifest-build-with-aws-codebuild-batch/index.html) for logical explanations and these repositories for practical examples
* https://github.com/compose-x/corretto-docker
* https://github.com/compose-x/docker-python

mreferre · Answer

Have you seen this? https://aws.amazon.com/blogs/containers/introducing-multi-architecture-container-images-for-amazon-ecr/ . Does it help?

How to push multi-arch docker image built with docker-compose to ECR

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