Hardcopy

When running services locally in Docker that need to authenticate with Azure Service Bus, you can leverage the Azure CLI (az login) to provide credentials. This avoids manually setting up connection strings or managed identities for local development.

Step 1: Authenticate Using Azure CLI

Run the following command to authenticate and persist credentials inside a volume:

docker run -it --rm -v "$PWD/azure-auth:/root/.azure" mcr.microsoft.com/azure-cli az login

This will:

• Prompt you to log in to Azure.
• Store authentication tokens in a directory called azure-auth inside your project.
• Remove the container after login (--rm ensures it doesn’t persist).

Step 2: Mount the Credentials in Your Service Container

Modify your docker-compose.yml to mount this volume in the service that needs Azure authentication:

services:
  my-service:
    image: my-service-image
    volumes:
      - "./azure-auth:/root/.azure"

This ensures that when your service runs, it has access to the Azure credentials stored in azure-auth.

Step 3: Verify Authentication

Inside the running container, you can verify that authentication works by running:

az account show

If configured correctly, this should display your logged-in Azure account details.

This setup allows your Docker container to seamlessly authenticate with Azure Service Bus while keeping credentials isolated and manageable.

Step 4: Use in C# to Connect to Azure Service Bus

Once authentication is set up, you can use the Azure SDK for .NET to connect to Azure Service Bus in your C# application. Ensure your application runs inside the container with the mounted credentials.

Install the required NuGet package if you haven't already:

Then, in your C# application, use DefaultAzureCredential to authenticate and connect to Service Bus:

This setup allows your C# application to authenticate with Azure Service Bus using the credentials stored in the mounted azure-auth directory. 🚀