Docker Hub vs AWS ECR vs GHCR: Key Differences and Usage Guide

Docker Hub is a popular public container registry with free and paid plans, ideal for general use. AWS ECR is a secure, scalable registry integrated with AWS services, best for AWS-centric workflows. GHCR (GitHub Container Registry) offers seamless integration with GitHub repos and fine-grained access control, great for GitHub users.

Quick Comparison

Here is a quick side-by-side comparison of Docker Hub, AWS ECR, and GHCR based on key factors.

Feature	Docker Hub	AWS ECR	GHCR (GitHub Container Registry)
Type	Public & private registry	Private registry (AWS cloud)	Private & public registry integrated with GitHub
Free Tier	Limited pulls and public repos	500 MB storage free, then pay	Free for public repos, limited private storage
Authentication	Docker ID login	AWS IAM roles and policies	GitHub login and tokens
Integration	Works with any Docker client	Tight AWS ecosystem integration	Tight GitHub Actions and repos integration
Security	Basic scanning, 2FA	Encryption at rest, IAM control	Fine-grained permissions, 2FA
Pricing	Free & paid plans	Pay per storage and data transfer	Free for public, paid for private storage

Key Differences

Docker Hub is the oldest and most widely used container registry. It supports both public and private repositories and is easy to use with any Docker client. However, its free tier limits image pulls and private repositories, which can affect heavy users.

AWS ECR is designed for users deeply invested in the AWS cloud. It offers strong security with AWS IAM roles, encryption, and integrates seamlessly with AWS services like ECS and EKS. Pricing is based on storage and data transfer, making it suitable for production workloads needing scalability and security.

GHCR is a newer registry tightly integrated with GitHub. It allows storing container images alongside source code and supports fine-grained access control using GitHub permissions. It is ideal for teams already using GitHub for CI/CD and want a unified platform for code and containers.

Code Comparison

Here is how you log in and push an image to Docker Hub.

bash

docker login --username yourusername

docker tag myapp yourusername/myapp:latest

docker push yourusername/myapp:latest

Output

Login Succeeded
The push refers to repository [docker.io/yourusername/myapp]
... (upload progress) ...
latest: digest: sha256:... size: 1234

AWS ECR Equivalent

Here is how you log in and push the same image to AWS ECR.

bash

aws ecr get-login-password --region us-east-1 | docker login --username AWS --password-stdin 123456789012.dkr.ecr.us-east-1.amazonaws.com

docker tag myapp:latest 123456789012.dkr.ecr.us-east-1.amazonaws.com/myapp:latest

docker push 123456789012.dkr.ecr.us-east-1.amazonaws.com/myapp:latest

Output

Login Succeeded
The push refers to repository [123456789012.dkr.ecr.us-east-1.amazonaws.com/myapp]
... (upload progress) ...
latest: digest: sha256:... size: 1234

When to Use Which

Choose Docker Hub if you want a simple, widely supported public registry with easy access and community images.

Choose AWS ECR if your infrastructure runs on AWS and you need tight security, scalability, and integration with AWS services.

Choose GHCR if you use GitHub for your code and CI/CD and want to keep your container images close to your source with fine-grained access control.

Key Takeaways

Docker Hub is best for general public and private image hosting with broad support.

AWS ECR excels in secure, scalable container storage tightly integrated with AWS.

GHCR offers seamless GitHub integration and fine-grained permissions for container images.

Choose the registry that fits your cloud provider and workflow for best results.