ASP.NET Core Runtime Docker Image
This repository contains images for running published ASP.NET Core applications. These images use the
microsoft/dotnet image as its base.
These images contain the runtime only. Use
microsoft/aspnetcore-build to build ASP.NET Core apps inside the container.
Supported Linux amd64 tags
Supported Windows Server 2016 Version 1709 (Fall Creators Update) amd64 tags
Supported Windows Server 2016 amd64 tags
Note: ASP.NET Core multi-arch tags, such as 2.0, have been updated to use nanoserver-1709 images if your host is Windows Server 2016 Version 1709 or higher or Windows 10 Fall Creators Update (Version 1709) or higher. You need Docker 17.10 or later to take advantage of these updated tags.
What is ASP.NET Core?
ASP.NET Core is a new open-source and cross-platform framework for building modern cloud based internet connected applications, such as web apps, IoT apps and mobile backends. It consists of modular components with minimal overhead, so you retain flexibility while constructing your solutions. You can develop and run your ASP.NET Core apps cross-platform on Windows, Mac and Linux. ASP.NET Core is open source at GitHub.
This image contains:
- .NET Core so that you can run your already compiled .NET Core applications.
- A set of native images for all of the ASP.NET Core libraries. These images will be used at runtime to increase
the cold-start performance of your application. A significant amount of the time taken to JIT compile on startup of
your application is typically spent compiling ASP.NET Core libraries rather than your application code. Given that
these libraries are not going to change for a given version we include native images so that the runtime can load them
instead of running the JIT.
- microsoft/dotnet - the .NET Core image if you don't need the ASP.NET Core specific optimizations.
- microsoft/aspnetcore-build - The ASP.NET Core build image for publishing an ASP.NET Core app inside a container.
How to use this image
Create a Dockerfile for your application, the following example assumes you have already compiled your application (which is the expected use case for this image)
FROM microsoft/aspnetcore WORKDIR /app COPY . . ENTRYPOINT ["dotnet", "myapp.dll"]
Build and run your app:
$ docker build -t myapp . $ docker run -d -p 8000:80 myapp
Browse to localhost:8000 to access your app.
A note on ports
This image sets the
ASPNETCORE_URLS environment variable to
http://+:80 which means that if you have not explicity
set a URL in your application, via
app.UseUrl in your Program.cs for example, then your application will be listening
on port 80 inside the container.