File-based configuration with Aspire.Host.Yarp/9.4.0

[AliHasnat]

I recently updated the package Aspire.Hosting.Yarp to 9.4.0-preview.1.25378.8, and WithConfigFile started throwing a compile-time error saying it no longer exists.

After some digging, I found out that the team intentionally removed this in #10210

It took me a while to figure out because the docs still reference it.

Since it’s now removed, it seems we can’t configure YARP using a config file anymore. I had already invested quite a bit of time preparing a JSON config file, and I imagine a lot of others may have done the same.

I also noticed that the docs mention “configuring with environment variables”, but I’m not sure what that means in this context. Are there any examples available?

I know the programmatic approach is still possible, but I’d like to confirm whether there’s still a way to use a config file, or if environment variables are now the only supported option.

Here’s what I was originally trying to do:
builder.AddYarp("apigateway")
.WithConfigFile("./configs/yarp.json")
.WithHostPort(7000)
.WithReference(x);

[davidfowl]

You might be able to work around it by specifying the first argument as the config file name and then you should be able to bindmount that configuration.

.WithArgs("./configs/yarp.json")
.WithBindMount("configs/yarp.json", "/configs/yarp.json")

[AliHasnat]

this worked, thanks @davidfowl