add make/g++ to docker (#1015)

Dockerfile

@@ -26,7 +26,7 @@ LABEL maintainer="Your Name <your.email@example.com>"
 LABEL description="Docker image for GPTQ-for-LLaMa and Text Generation WebUI"
 
 RUN apt-get update && \
-    apt-get install --no-install-recommends -y git python3 python3-pip && \
+    apt-get install --no-install-recommends -y git python3 python3-pip make g++ && \
     rm -rf /var/lib/apt/lists/*
 
 RUN --mount=type=cache,target=/root/.cache/pip pip3 install virtualenv