bencuk/dotnet-demoapp repository overview

⁠Simple .NET Core ASP web application

Based on the standard .NET Core 2.0 template (dotnet new), but further modified and jazzed up a little. The app was recently updated to use Razor Pages rather than MVC, which fits the simple demo app use case better.

Features added on top of the standard template:

• The 'About' page displays some system basic information (OS, platform, CPUs, IP address etc) and should detect if the app is running as a container or not.
• The 'Stress' page will generate CPU load, useful for testing autoscaling.
• The 'DepCall' page will let you make a server side HTTP call, useful to demonstrate dependency calls in Application Insights
• The App Insights SDK has been included, so if configured with an instrumentation key, monitoring data can be gathered and sent to Application Insights

Kestrel has been set to listen on http://0.0.0.0:5000. This makes it possible to be run inside a container. Dockerfiles for building as an image are provided too

⁠Dockerfile Notes

Three versions of the Dockerfile are provided:

• Dockerfile⁠ - Default, assumes the app has already been built & published into binaries, (e.g. with dotnet publish -c release) prior to running docker build. Typically used in conjunction with VSTS build tasks or on a local development machine.
• Dockerfile.windows⁠ - Same as default file above, but uses aspnetcore Nanoserver image as base, making it a Windows container.
• Dockerfile.build⁠ - This carries out the full .NET Core restore, build & publish steps as part of the build of the Docker image. This is done with a different source image 'aspnetcore-build' and two RUN commands invoked in the Dockerfile. This is handy to use when you don't have a build server or a system with the SDK available.

⁠Docker Images

Public Docker images are available on Dockerhub⁠ in both Linux (Ubuntu) and Windows (Nanoserver) formats

⁠Updates

• Aug 2017 - Switched from MVC to Razor Pages, added stress and dependency pages
• Aug 2017 - Updated to ASP.NET Core 2.0, cleaned up initial boilerplate & refreshed Dockerfiles
• June 2017 - Changed design and wording, support for Windows containers & improved Docker detection
• Feb 2017 - Updated to .NET Core 1.1
• March 2017 - Total overhaul to .NET Core SDK 1.0, using csproj and new MVC template