chore: add missing utils

Dockerfile.x86_64

@@ -10,6 +10,7 @@ RUN apt-get update
 # cmake - used by cmsis
 RUN apt-get install -y --no-install-recommends \
 	automake \
+	bsdmainutils \
 	build-essential \
 	binutils-dev \
 	cmake \
@@ -52,6 +53,10 @@ RUN apt-get install -y --no-install-recommends \
 	pango1.0-tools \
 	wamerican
 
+# Hey is a load generator we have to recklessly download from the 'net, as it is only published to brew
+# See https://github.com/rakyll/hey
+RUN wget https://hey-release.s3.us-east-2.amazonaws.com/hey_linux_amd64 && mv hey_linux_amd64 hey && chmod +x hey && mv hey /usr/bin/hey
+
 # Interactive Tools
 RUN apt-get install -y --no-install-recommends \
 	less \