Deploy a Docker App to App Services on Azure.
I have experience building highly accessible, scalable, and reliable cloud infrastructure and have experience with AWS, Linux, Git, Docker, and Kubernetes. S3, EC2, CloudFormation, CloudFront, Auto-Scaling Group, Elastic Load Balancer, IAM, Cloud9, VPC, RDS, Route53, and other AWS services are just a few of the ones I am familiar with. I have experience building CI/CD pipelines, high-availability web apps, and websites. I'm excited about designing, implementing, and automating cloud-based apps while utilizing best practices like configuration management, continuous integration, and deployment.
This article is a walkthrough on how to "dockerize" a node js app and host via Azure app service.
Azure app service is a fully managed service that enables you to build and host web apps, mobile backends, and RESTful APIs in the programming language of your choice without managing infrastructure. This is a Platform as a Service (PAAS) because the job of managing infrastructure is not on the user.
This walkthrough is divided into 2 parts:
Creating a Docker image (with a Node app) and pushing it to a registry (Azure Container Registry).
Hosting the image via Azure app service.
The following tools are needed:
An Azure account with an active subscription.
Docker and a terminal.
Part 1: Dockerize a Node js app and push to Azure Container Registry
- Login to your Azure account and navigate to container registries to create a container registry (this is where our docker image will be stored) by clicking on create container registry.
- Complete the necessary details before clicking create (a summary of mine).
- Progress of ACR being initialized and on the way to getting created and finally successful creation.
- Navigating to my Container Registry dashboard.
- On the LHS, navigate to Settings => Access keys and enable admin user, the details will be used to login to ACR via your terminal on your local machine.
- Navigate to your project directory via the terminal and login using the details from the step above
docker login <login server> --username <username> --password <password>
- Build docker image using this command
docker build -t <name>:<tag> .where . is the current directory.
- Check the image exists using
docker imagescommand ( this lists all available images).
- Push the image to ACR using
docker push <name>:<tag>
- On Azure portal, navigate to your container registry => repositories to view pushed image.
Part 2: Hosting my docker app on app service
- On the image click the options icon and choose deploy to the web app.
- Details for my app service where my docker image is the source, then click create.
Deployment is completed.
Navigate to just created app service.
- Following Azure's best practices.
- Adding port as a variable to Configurations
- Access the app via the default domain on the browser
To avoid incurring charges, I cleaned up my resources.
Visit my Github repo to view the code.
