GitHub Container Registry vs Docker Hub vs ECR — Which Should You Use? (2026)

Every team needs a container registry. Three dominate: GitHub Container Registry (GHCR), Docker Hub, and AWS ECR. They have very different pricing, access models, and CI/CD integrations. Here's the full comparison.

What Is a Container Registry?

A container registry stores Docker images. Your CI pipeline pushes images after build, and your Kubernetes cluster pulls them at deploy time.

CI/CD (build) → push → Registry → pull → Kubernetes (deploy)

The registry sits in the critical path of every deployment.

Docker Hub

The original. Most FROM statements in Dockerfiles pull from Docker Hub.

Pricing (2026)

Pros

• Universal — every tool works with Docker Hub by default
• Huge public image library (nginx, postgres, node, etc.)
• Simple to use — docker push username/myimage:tag
• Docker Scout for vulnerability scanning (free tier)

Cons

• Rate limiting is brutal — 100 pulls/6hr per IP on free tier. In CI with shared runners, you'll hit this constantly
• Slower pull speeds vs cloud-native registries
• Public images are truly public
• Outages affect everyone (it's happened)

Best for

• Public open-source images
• Small personal projects
• When you need maximum compatibility

GitHub Container Registry (GHCR)

Launched 2020. Integrated into GitHub Packages.

Pricing (2026)

Public repos = completely free, unlimited storage and bandwidth.

Authentication

# Login with GitHub token
echo $GITHUB_TOKEN | docker login ghcr.io -u USERNAME --password-stdin
 
# Push image
docker tag my-app ghcr.io/username/my-app:latest
docker push ghcr.io/username/my-app:latest

GitHub Actions integration

- name: Login to GHCR
  uses: docker/login-action@v3
  with:
    registry: ghcr.io
    username: ${{ github.actor }}
    password: ${{ secrets.GITHUB_TOKEN }}  # ← automatic, no setup
 
- name: Build and push
  uses: docker/build-push-action@v5
  with:
    push: true
    tags: ghcr.io/${{ github.repository }}:${{ github.sha }}

GITHUB_TOKEN is automatic — zero secret setup for GitHub Actions pipelines.

Pros

• Free for public repos (unlimited)
• Native GitHub Actions integration — no secrets needed
• No rate limiting in GitHub Actions
• Package visibility tied to repo visibility
• Works with GitHub's OIDC for keyless auth

Cons

• Only makes sense if you're already on GitHub
• Private image costs add up for large teams
• Less universal than Docker Hub outside GitHub ecosystem

Best for

• Open-source projects
• Teams using GitHub Actions for CI/CD
• Replacing Docker Hub to avoid rate limits

AWS ECR (Elastic Container Registry)

AWS-native, designed for EKS and ECS.

Pricing (2026)

Private ECR: no free pull between ECR and EKS in the same region. Very cost-effective for AWS-native workloads.

Authentication

ECR uses short-lived tokens (12 hours) — no long-lived passwords.

# Get login token (expires in 12hr)
aws ecr get-login-password --region us-east-1 | \
  docker login --username AWS --password-stdin \
  123456789.dkr.ecr.us-east-1.amazonaws.com
 
# Push
docker tag my-app 123456789.dkr.ecr.us-east-1.amazonaws.com/my-app:latest
docker push 123456789.dkr.ecr.us-east-1.amazonaws.com/my-app:latest

EKS integration (no credentials needed)

EKS nodes automatically authenticate to ECR in the same account — zero credential setup for pulls.

# In your K8s deployment — no imagePullSecrets needed
containers:
- image: 123456789.dkr.ecr.us-east-1.amazonaws.com/my-app:latest

ECR features

• Lifecycle policies — auto-delete old images: keep last 10 tags, delete untagged after 1 day
• Image scanning — built-in Trivy/Snyk-powered scan on push
• Immutable tags — prevent overwriting a tag (production safety)
• Cross-account replication — replicate to other AWS accounts
• Pull-through cache — cache Docker Hub images to avoid rate limits

# Lifecycle policy example
{
  "rules": [{
    "rulePriority": 1,
    "description": "Keep last 10 images",
    "selection": {"tagStatus": "any", "countType": "imageCountMoreThan", "countNumber": 10},
    "action": {"type": "expire"}
  }]
}

Pros

• Native EKS/ECS integration (no credentials)
• Fine-grained IAM-based access control
• Lifecycle policies keep storage costs low
• Same region pulls are fast and free
• Immutable tags for production safety

Cons

• Complex authentication (12hr tokens, needs refresh in CI)
• Only makes sense if you're on AWS
• Cross-region costs add up
• More setup than GHCR for CI/CD

Best for

• Teams running on EKS or ECS
• Production workloads on AWS
• When you need IAM-based access control

Side-by-Side Comparison

Which Should You Use?

Use GHCR if:

✅ Your code is on GitHub
✅ You use GitHub Actions for CI/CD
✅ Open-source project (completely free)
✅ You want to avoid Docker Hub rate limits without cost

Use ECR if:

✅ You're deploying to EKS or ECS
✅ You need IAM-based access control
✅ You want lifecycle policies for cost management
✅ Full AWS stack (no reason to go outside AWS)

Use Docker Hub if:

✅ You're publishing public images for the community
✅ Maximum compatibility with all tools
✅ Personal projects (free tier is fine)

The common pattern in 2026:

GHCR for CI artifacts + ECR for production — build in GitHub Actions, push to GHCR (free), promote tagged releases to ECR for EKS deployment.

Learn More

• AWS Free Tier — 500 MB ECR free for 12 months
• KodeKloud Docker Course — hands-on image registry labs