🚀 Spring Boot App Deployment using Azure Container Instances & Azure DevOps

This project demonstrates how to containerize a Spring Boot application and deploy it to Azure Container Instances (ACI) using Azure DevOps CI/CD pipelines.

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📦 Tech Stack

• Java 17 + Spring Boot
• Maven
• Docker
• Azure Container Registry (ACR)
• Azure Container Instances (ACI)
• Azure DevOps Pipelines

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✅ Features

• Containerized a Spring Boot app using Docker
• Continuous Integration with Maven + Docker image build
• Continuous Deployment to Azure Container Instance
• Environment-agnostic and scalable pipeline
• Health check support (optional)

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🛠️ Prerequisites

Before you begin, ensure you have:

• Azure Account
• Azure DevOps Account
• Git, Java 17, Maven installed locally
• Docker installed (optional for local testing)

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📁 Project Structure

springboot-azure-deploy/
├── src/                    # Spring Boot source files
├── target/                 # Maven build output
├── Dockerfile              # Container configuration
├── pom.xml                 # Project dependencies & build settings
├── azure-pipelines.yml     # CI pipeline (Build + Push)
├── aci-deploy.yml          # CD pipeline (Deploy to ACI)
└── README.md

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🚧 Setup & Deployment

1. Clone this Repository

git clone https://dev.azure.com/<org>/<project>/_git/<repo>
cd <repo>

2. Build the JAR

./mvnw clean package

3. Dockerfile (Already Included)

FROM openjdk:17-jdk-alpine
VOLUME /tmp
COPY target/demo-0.0.1-SNAPSHOT.jar app.jar
ENTRYPOINT ["java","-jar","/app.jar"]

4. Create Azure Resources

az acr create --resource-group <ResourceGroup> --name <ACRName> --sku Basic

ACI will be created automatically via pipeline.

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🔁 Azure DevOps Pipelines

🔹 CI Pipeline – azure-pipelines.yml

• Packages JAR with Maven
• Builds and pushes Docker image to ACR

🔹 CD Pipeline – aci-deploy.yml

• Deploys image to Azure Container Instance
• Exposes the app via a public DNS

Don't forget to create a Service Connection to Azure in DevOps.

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🔐 Secrets Required

Set these as pipeline variables or secret variables group:

• ACR_USERNAME
• ACR_PASSWORD

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🌐 Access the App

Once deployed, access it via:

http://<dns-name>.<region>.azurecontainer.io:8080/

Expected Output:

Hello, Azure!

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🧪 Optional: Health Check Step

You can add this after deployment in pipeline:

- script: |
    curl http://<your-container-dns>:8080/actuator/health
  displayName: 'Health Check'

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📊 Monitoring & Logs

• View logs in Azure Portal → Container Instances → Logs
• Use Application Insights for advanced monitoring (optional)

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📄 License

This project is licensed under the MIT License. Feel free to use and modify.

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🙌 Acknowledgements

Thanks to Microsoft Azure & Azure DevOps for providing free-tier cloud and CI/CD tools.

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