Aspire app lifecycle guide

This guide provides a high-level overview of the lifecycle phases of an Aspire application, from development through local deployment to production release. By using the same AppHost configuration across all phases, you ensure consistency and reduce configuration drift between environments. The example in this guide demonstrates how Aspire orchestrates containerized applications with persistent storage and CI/CD automation using the Docker Integration and GitHub.

App lifecycle

The Aspire application lifecycle consists of three main phases:

1. Inner-Loop Development - Local development and debugging with aspire run
2. Local Deployment - Deployment to your defined compute environment(s) with aspire deploy. This example shows containerized deployment to Docker Desktop.
3. Publish Release (CI/CD) - Automated build & publish pipeline. This example shows using GitHub Actions to build and push images and publish release artifacts for deployment later.

Each phase uses the same AppHost configuration but serves different purposes in the development and deployment workflows.

Example

Consider this example. You have a distributed application that consists of a Blazor web project that relies on a SQL Server database with a persistent data volume as well as a persistent writable file volume to capture user file uploads. You want to distribute your Blazor app as a Docker container image via the GitHub Container Registry. You need the Aspire.Hosting.Docker and Aspire.Hosting.SqlServer integrations.

C# — AppHost.cs

var builder = DistributedApplication.CreateBuilder(args);

// Add Docker Compose environment
var compose = builder.AddDockerComposeEnvironment("volumemount-env")
    .WithProperties(env =>
    {
        env.DashboardEnabled = true;
    })
    .ConfigureComposeFile(composeFile =>
     {
         // Add the blazor file volume to the top-level volumes section
         composeFile.AddVolume(new Volume
                               {
                                   Name = "volumemount-blazor-uploads",
                                   Driver = "local"
                               });
     });

// Add container registry
var endpoint = builder.AddParameter("registry-endpoint");
var repository = builder.AddParameter("registry-repository");
builder.AddContainerRegistry("container-registry", endpoint, repository);

//Add SQL Server with data volume
var sqlPassword = builder.AddParameter("sqlserver-password", secret: true);
var sqlserver = builder.AddSqlServer("sqlserver", password: sqlPassword)
    .WithDataVolume("volumemount-sqlserver-data")
    .WithLifetime(ContainerLifetime.Persistent);

var sqlDatabase = sqlserver.AddDatabase("sqldb");

//Add the Blazor web app with reference to the database
//Deploy as a docker image with a volume mount for user upload files
var blazorweb = builder.AddProject<Projects.VolumeMount_BlazorWeb>("blazorweb")
        .WithExternalHttpEndpoints()
        .WithReference(sqlDatabase)
        .WaitFor(sqlDatabase)
        //Deploy the Web project as a Docker Compose service with a volume mount for files
        .PublishAsDockerComposeService((resource, service) =>
        {
            service.AddVolume(new Volume
            {
                Name = "volumemount-blazor-uploads",
                Source = "volumemount-blazor-uploads",
                Target = "/app/wwwroot/uploads",
                Type = "volume",
                ReadOnly = false
            });

            // Override the entrypoint to allow write permissions to the volume
            // then run the default entrypoint as app user
            service.User = "root";
            service.Command = new List<string>
            {
                "/bin/sh",
                "-c",
                "chown -R app:app /app/wwwroot/uploads && chmod -R 755 /app/wwwroot/uploads && exec su app -c 'dotnet /app/VolumeMount.BlazorWeb.dll'"
            };

        });

builder.Build().Run();

Phase 1: Inner-Loop Development

What is aspire run?

The aspire run command starts your Aspire application in development mode. This is the inner-loop development experience where you write code, test changes, and debug your application locally.

When you run aspire run:

1. Aspire dashboard launches - A web-based dashboard starts, and its URL (often an HTTPS login URL like https://localhost:<port>/login?...) is printed to the console.
2. Resources start - All resources defined in your AppHost.cs are orchestrated.
3. Live debugging - You can attach debuggers, set breakpoints, and modify code with hot reload.
4. Telemetry & logs - Dashboard provides real-time logs, metrics, and distributed traces.

This command searches the current directory structure for AppHost projects to build and run:

Aspire CLI

aspire run

Command reference: aspire run

The console will display the dashboard URL with a login token:

Aspire CLI

Dashboard:  https://localhost:17244/login?t=9db79f2885dae24ee06c6ef10290b8b2

    Logs:  /home/vscode/.aspire/cli/logs/apphost-5932-2025-08-25-18-37-31.log

        Press CTRL+C to stop the apphost and exit.

In the example above, when resources start with the run command:

• SQL Server container starts in Docker with persistent volume
• Blazor Web project runs as a .NET process (not containerized)
• Database is automatically created and migrated (containerized)

Phase 2: Local Deployment

What is aspire deploy?

The aspire deploy command creates a fully containerized deployment of your application in the compute environment(s) you define. This simulates a production-like environment on your local machine. In this example, local containers and volumes are created on Docker Desktop using the Docker Integration. It requires all parameters to be set.

Hinweis

Aspire will prompt you for parameters the first time you deploy and save them for later use. For more info, see External Parameters.

When you run aspire deploy Aspire will:

1. Build and push container images for projects
2. Generate docker-compose.yaml in ./aspire-output/ directory
3. Start all containers using Docker Compose
4. Create and mount persistent volumes

In this example, the following gets deployed:

Containers:

• aspire-volumemount-env - Docker Compose stack
• sqlserver - SQL Server with persistent data volume
• blazorweb - Blazor Web app with persistent file uploads volume
• volumemount-env-dashboard - Monitoring dashboard

Volumes:

• volumemount-sqlserver-data - Stores database files (.mdf, .ldf)
• volumemount-blazor-uploads - Stores user-uploaded images

Hinweis

You will need a GitHub personal access token to access the GitHub Container Registry. See Authenticating to the GitHub Container Registry

You can login to your GitHub Container Registry before deploying.

export GITHUB_TOKEN=<YOUR PERSONAL ACCESS TOKEN>
echo $GITHUB_TOKEN | docker login ghcr.io -u USERNAME --password-stdin

aspire deploy

Command reference: aspire deploy

Phase 3: Publish Release (CI/CD)

You can create a workflow that automates the process of building and pushing the image, and publishing of deployment artifacts using the Aspire CLI in a CI/CD pipeline. The Aspire CLI can be used to build your app, push images, and publish artifacts. This allows you to deploy the app later via standard Docker Compose.

In this example, the workflow runs on every push to main, does a checkout, and then performs these steps:

1. Setup Environment - Install .NET
2. Install Aspire CLI - Install the Aspire CLI
3. Build and Push Container Images - Build app and push image to GitHub Container Registry with aspire do push
4. Publish Docker Compose Artifacts - Generate deployment files with aspire publish
5. Upload Artifacts - Store deployment files for download

Step 1: Setup Environment

- name: Setup .NET
  uses: actions/setup-dotnet@v4
  with:
    dotnet-version: '10.0.x'

Step 2: Install Aspire CLI

- name: Install Aspire CLI
  run: |
    echo "Installing Aspire CLI from install script..."
    curl -sSL https://aspire.dev/install.sh | bash
    echo "$HOME/.aspire/bin" >> $GITHUB_PATH

Step 3. Build App, Create & Push Image to GHCR

- name: Login to GHCR
  uses: docker/login-action@v3
  with:
    registry: ghcr.io
    username: ${{ github.actor }}
    password: ${{ secrets.GITHUB_TOKEN }}

- name: Build and Push images with Aspire
  env:
    Parameters__registry_endpoint: ghcr.io
    Parameters__registry_repository: your-org/your-repo
  run: aspire do push

Hinweis

Replace your-org/your-repo with your actual GitHub organization and repository name, or use ${{ github.repository_owner }}/${{ github.event.repository.name }} for automatic values. Values must be lowercase.

The aspire do push command does the following:

• Analyzes your AppHost.cs configuration
• Restores dependencies and builds the project
• Builds Docker container images for project resources
• Tags images with configured registry endpoint and repository
• Pushes images to GitHub Container Registry (ghcr.io)
• Uses parameters defined in AppHost.cs:
  • Environment Parameters__registry_endpoint maps to registry-endpoint parameter
  • Environment Parameters__registry_repository maps to registry-repository parameter

Command reference: aspire do

Step 4: Publish Docker Compose Artifacts

- name: Prepare Docker Compose with Aspire
  run: |
    aspire publish \
      --project VolumeMount.AppHost/VolumeMount.AppHost.csproj \
      --output-path ./aspire-output

The aspire publish command does the following:

• Analyzes your AppHost.cs configuration
• Generates docker-compose.yaml file with all service definitions
• Creates .env template file for environment variables
• Packages configuration needed for deployment
• Outputs artifacts to ./aspire-output/ directory

aspire-output/
├── docker-compose.yaml    # Service definitions for all containers
└── .env                   # Template for required environment variables

Command reference: aspire publish

Step 5: Upload Deployment Artifacts

- name: Upload Aspire artifacts
  uses: actions/upload-artifact@v4
  with:
    name: aspire-deployment-files
    path: ./aspire-output/
    retention-days: 30
    include-hidden-files: true

In this example, artifacts are available for download from the Actions workflow run for 30 days. Hidden files are included so that the .env file is also available in the artifacts.

Deploying to Production

After the workflow completes, you have everything needed for production deployment:

1. Download Artifacts from GitHub Actions workflow run:

   • docker-compose.yaml - Complete service definitions
   • .env - Environment variable template

2. Configure Environment Variables in .env. For example:

   BLAZORWEB_IMAGE=ghcr.io/bethmassi/volumemount/blazorweb:latest
   BLAZORWEB_PORT=8080
   SQLSERVER_PASSWORD=YourSecurePassword

3. Deploy with Docker Compose:

   docker compose up -d

4. Verify Deployment:

   docker compose ps
   docker compose logs -f

Lifecycle Summary

Phase	Command	Purpose	Environment	App	Database
Development	aspire run	Inner-loop coding & debugging	Local machine	App process (i.e. .NET)	Container
Local Deploy	aspire deploy	Test containerized app locally	Registered compute environment (i.e. Docker Desktop)	Container	Container
Release	CI/CD workflow (i.e. GitHub Actions)	Publish to staging/ production	Cloud/Server	Container	Container

The AppHost.cs file is the single source of truth for your application architecture. Each phase above uses the exact same AppHost configuration. This eliminates configuration drift between development and deployment. It defines things your distributed application needs like:

• Services & Dependencies - Projects, containers, and their relationships
• Configuration - Connection strings, secrets, and parameters
• Volumes - Persistent storage for databases and files
• Networking - Endpoints, ports, and service communication
• Deployment - Container registry, image tags, and publish settings

For more information, see AppHost configuration.

Next steps

• Learn more about Service discovery
• Explore Telemetry options
• Understand Health checks