Cargo Features

bollard-buildkit-proto has no features set by default.

[dependencies]
bollard-buildkit-proto = { version = "0.3.0", features = ["build"] }
build = tonic-build

Required by the gen binary

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

tonic-build build?