message: Added yarn install to make build
diff: ###
  # All-in-one build command.
  ###
  -build: build-protocol-definitions
  +build: build-yarn-dependencies build-protocol-definitions
  +
  +###
  +# Download dependencies from the Frontend using Yarn.
  +###
  +build-yarn-dependencies:
  + yarn --cwd ${PWD}/frontend install
  ###
  # Protobuf Definitions.
  