Pass build args to the build step

Is there a way to pass build args for the `docker build` step?

Judging from the code I see [here](https://github.com/Azure/container-apps-deploy-action/blob/main/action.yml#L516C66-L516C66) this isn't supported, but maybe you can confirm it?

I know of the `environmentVariables` parameter, the problem with it is that I need some arguments to be available while running `docker build`, while those `environmentVariables` become available only when the container is run, for what I understand.