Generating for other languages

I understand that this tool has a focus on Go applications but in general, a GRPC or protobuf definition is shared by other languages in order to generate the client code necessary to talk to those services.

Is there any guide or recommendation on how to do that? Currently protoc throws errors such as (Example taken from containerd):

```
gogoproto/gogo.proto: File not found.
github.com/containerd/containerd/protobuf/plugin/fieldpath.proto: File not found.
api/events/container.proto: Import "gogoproto/gogo.proto" was not found or had errors.
api/events/container.proto: Import "github.com/containerd/containerd/protobuf/plugin/fieldpath.proto" was not found or had errors
```

Is there any simple/recommended way to make those imports resolve when generating for other languages? Or any way to tell protobuild to run `protoc` with a specific plugin, i.e. `--rust_out` or `--ruby_out`, etc?