Remove ONBUILD references from Mono content.md

The onbuild variant was removed a long time ago, but I wasn't aware of this doc.
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Alexander Köplinger 2022-05-02 18:44:28 +02:00 committed by GitHub
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@ -9,30 +9,22 @@ Sponsored by Xamarin, Mono is an open source implementation of Microsoft's .NET
# How to use this image
This image will run stand-alone Mono console apps.
## Create a `Dockerfile` in your Mono app project
This example Dockerfile will run an executable called `TestingConsoleApp.exe`.
To run a pre-built .exe file with the Mono image, use the following commands:
```dockerfile
FROM %%IMAGE%%:3.10-onbuild
CMD [ "mono", "./TestingConsoleApp.exe" ]
FROM %%IMAGE%%:latest
RUN mkdir /opt/app
COPY HelloWorld.exe /opt/app
CMD ["mono", "/opt/app/HelloWorld.exe"]
```
Place this file in the root of your app, next to the `.sln` solution file. Modify the exectuable name to match what you want to run.
This image includes `ONBUILD` triggers that adds your app source code to `/usr/src/app/source`, restores NuGet packages and compiles the app, placing the output in `/usr/src/app/build`.
With the Dockerfile in place, you can build and run a Docker image with your app:
You can build and run the Docker Image as shown in the following example:
```console
$ docker build -t my-app .
$ docker run my-app
docker build -t monoapp .
docker run -it --rm monoapp
```
You should see any output from your app now.
# Credits
This Docker image is provided by Xamarin, for users of the Mono Project.