Add application arguments to run .NET console app in Docker

Question

In my docker file, I have this:

FROM microsoft/dotnet:2.0-runtime
ARG source
WORKDIR /app
COPY ${source:-obj/Docker/publish} .
ENTRYPOINT ["dotnet", "app.dll"]

and I need to pass an application argument to the app, let's say --argument, so that the app can run inside the container.

So, I know I can run the app locally by doing

dotnet run -- --argument

but I'm stuck at trying to add the --argument to the Dockerfile (or anywhere, I don't know).

I tried adding CMD ["--argument"], CMD ["--", "--argument"]in the Dockerfile, but with no success.

Is it possible to do this?

Are you sure this one doesn't work? ENTRYPOINT ["dotnet", "app.dll", "argument"] ?? — Kostya
– Kostya, Commented Oct 18, 2017 at 19:04
Have you tried CMD["dotnet", "app.dll", "argument"] instead of ENTRYPOINT ["dotnet", "app.dll"]? — ingvar
– ingvar, Commented Oct 18, 2017 at 19:53

Jose Ramirez · Accepted Answer · 2017-10-19 13:07:12Z

2

I made it work, by adding the argument in the Dockerfile like so:

...
ENTRYPOINT ["dotnet", "app.dll", "--argument"]
...

But I think that this is not an "absolute" solution, i.e., for instance, the argument I needed to add was not for dotnet, but for the app itself; that's why it worked through the command line with the -- switch. Maybe the solutions proposed in the comment section won't work in all scenarios because of this detail.

answered Oct 19, 2017 at 13:07

Jose Ramirez

4218 silver badges21 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Nikita Kalimov · Accepted Answer · 2022-04-10 15:46:02Z

1

I might be late to the party, but recent Microsoft documentation points out how to pass arguments to .NET console app:

docker run -it --rm counter-image 3

3 is the argument. So if you need to pass args array, you just do it after the image name that you want to run.

I think you might already know this, but I think whoever comes to this question should also have some relevant information.

Source: https://learn.microsoft.com/en-us/dotnet/core/docker/build-container?tabs=windows

answered Apr 10, 2022 at 15:46

Nikita Kalimov

1341 gold badge3 silver badges12 bronze badges

Collectives™ on Stack Overflow

Add application arguments to run .NET console app in Docker

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related