It uses the 7.0 SDK image to restore the application’s dependencies, publish the application to a folder, and finally create the final runtime image from that directory. This project uses a multi-stage build to both build and run the app. RUN dotnet publish -c Release -o /app -use-current-runtime -self-contained false -no-restore # copy csproj and restore as distinct layers Let’s look at one of our samples for an ASP.NET Core application’s Dockerfile here: # įROM /dotnet/sdk:7.0 AS build
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A popular way to build container images is through a Dockerfile – a special file that describes how to create and configure a container image. MotivationĬontainers are an excellent way to bundle and ship applications. Additionally, only Linux-圆4 containers are supported. Now you can go to and you should see the sample MVC application, rendered in all its glory.įor this release, you must have Docker installed and running for this sample to work. # add a reference to a (temporary) package that creates the containerĭotnet add package ĭotnet publish -os linux -arch 圆4 -p:PublishProfile=DefaultContainerĭocker run -it -rm -p 5010:80 my-awesome-container-app:1.0.0 TL DRīefore we go into the details of how this works, I want to show what a zero-to-running containerized ASP.NET Core application looks like: # create a new project and move to its directoryĭotnet new mvc -n my-awesome-container-app Container images are now a supported output type of the. You can now create containerized versions of your applications with just dotnet publish. NET Runtime was hardened for containers years ago. Containers have become one of the easiest ways to distribute and run a wide suite of applications and services in the cloud.