🐞 Type mismatch with BuildArg in Docker build operations

[quanta42]

What is the issue?

@shykes I love the presentation you did with dagger and llm.

I tried building a prototype during innovation week at work but when attempting to build a Docker image with build arguments in both Go and Python SDKs, there's a type conversion error at the GraphQL layer.

Is there a workaround for this?

Dagger version

dagger v0.17.0-llm.2

Steps to reproduce

• Create a Dockerfile that uses build arguments:

FROM ${NVIDIA_DOCKER_VERSION}
ARG NVIDIA_DRIVER_VERSION
ARG PYTORCH_VERSION
# ...other build args

• Try to build using Go SDK

buildArgs := []dagger.BuildArg{
    {Name: "NVIDIA_DOCKER_VERSION", Value: "nvidia/cuda:12.4.1-runtime-ubuntu22.04"},
    {Name: "NVIDIA_DRIVER_VERSION", Value: "535.129.03"},
    {Name: "PYTORCH_VERSION", Value: "2.6.0"}
}

container := sourceDir.DockerBuild(dagger.DirectoryDockerBuildOpts{
    Dockerfile: "Dockerfile.advanced",
    BuildArgs: buildArgs,
})

Log output

error: parse selections: parse field "dockerBuild": init arg "buildArgs" value as dagql.DynamicOptional ([BuildArg!]) using dagql.DynamicOptional: assign input object "Name" as NVIDIA_DOCKER_VERSION (dagql.String): cannot assign dagql.String into field of type string

[shykes]

cc @grouville @jedevc @vito any ideas?