AWS App Runner Deploys: How to Deploy Containerized Apps Fast

Struggling to deploy containerized apps without managing complex infrastructure? AWS App Runner deploys take the headache out of hosting web apps, APIs, and microservices by handling all the heavy lifting for you. You don’t need to provision servers, configure load balancers, or set up auto-scaling rules manually.

What Is AWS App Runner?

AWS App Runner is a fully managed container service that lets you deploy web apps and APIs quickly at scale. It supports both container images and source code as deployment inputs, making it flexible for teams of all sizes.

Unlike other AWS container services, App Runner handles networking, security, and scaling automatically. You only pay for the resources your app uses when it’s running, with no upfront costs.

How AWS App Runner Deploys Work

Every AWS App Runner deploy follows a simple, automated workflow. The service pulls your code or container image, builds and packages it if needed, then rolls out the new version with zero downtime for most apps.

There are two core deployment source options to choose from:

Deployment Option 1: Container Image Deploy

Push your pre-built container image to a registry like Amazon ECR, Docker Hub, or a private registry. App Runner pulls the image directly and deploys it to a managed environment.

This option is ideal if you already have a CI/CD pipeline that builds container images for you.

Deployment Option 2: Source Code Deploy

Connect your GitHub or Bitbucket repository directly to App Runner. The service automatically builds your app from source using a default or custom build configuration, then deploys the resulting container.

This option cuts out manual image building steps, making it great for smaller teams or rapid prototyping.

Step-by-Step Guide to Your First AWS App Runner Deploy

Follow these 7 steps to complete your first AWS App Runner deploy in under 10 minutes:

1. Prepare your app: Either containerize your app and push it to Amazon ECR, or ensure your source code is in a supported GitHub/Bitbucket repo.
2. Access the App Runner console: Log in to your AWS account and navigate to the App Runner dashboard.
3. Create a new service: Click “Create service” to start the deployment wizard.
4. Choose your deployment source: Select either “Container registry” or “Source code repository” and authenticate to your chosen source.
5. Configure service settings: Set the port your app listens on, add environment variables, and adjust resource allocations (CPU, memory) to match your app’s needs.
6. Review and deploy: Double-check all settings, then click “Create and deploy” to start the process.
7. Test your deployment: Once the deploy finishes, use the provided App Runner URL to verify your app is running correctly.

Best Practices for AWS App Runner Deploys

Follow these tips to optimize your AWS App Runner deploys for performance and cost:

• Use Amazon ECR for private container images to reduce latency and improve security.
• Set resource allocations (CPU/memory) to match your app’s actual usage to avoid overpaying.
• Enable auto-scaling to handle traffic spikes without manual intervention.
• Use environment variables instead of hardcoding config values to make deploys more flexible.
• Monitor deploy logs and app performance via Amazon CloudWatch.

Common AWS App Runner Deploy Issues (and Fixes)

Even with a managed service, you may run into occasional issues. Here are the most common problems and how to resolve them:

• Image pull errors: Check that App Runner has permission to access your container registry, and that the image tag exists.
• Port mismatch: Ensure your app listens on the exact port you configured in the App Runner service settings (default is 8080).
• Slow deploys: Optimize your container image size by removing unnecessary dependencies to speed up pull and build times.
• Environment variable errors: Double-check that all required variables are set, with no typos in keys or values.

Frequently Asked Questions

How long do AWS App Runner deploys take?

Most small app deploys finish in 1-5 minutes. Larger container images or source code builds may take up to 15 minutes.

Can I roll back a bad AWS App Runner deploy?

Yes, App Runner keeps a history of all deploys. You can roll back to a previous version with one click in the console.

Does AWS App Runner support custom domains?

Yes, you can map custom domains to your App Runner service using Amazon Route 53 or a third-party DNS provider.

Is there a free tier for AWS App Runner deploys?

New AWS users get a free tier covering 500,000 requests and 1 vCPU/2GB memory for the first 3 months of use.

Conclusion

AWS App Runner deploys simplify containerized app hosting for teams that want to focus on writing code instead of managing infrastructure. With automated scaling, zero-downtime updates, and support for both images and source code, it’s a great fit for web apps, APIs, and microservices of all sizes.

For full technical specifications and advanced configuration options, refer to the official AWS App Runner documentation.

If you’re new to containers, check out our guide to Docker basics (internal link) for more context on preparing apps for deployment.

Ready to launch your first app? Sign up for the AWS Free Tier today and complete your first AWS App Runner deploy in minutes. Have questions about the process? Drop them in the comments below!