Fix bindata build step and parameterize docker build

proxy/Dockerfile

@@ -0,0 +1,28 @@
+FROM golang:buster AS step_0
+#
+# IMAGE_ARCH is the binary format of the final output
+#
+ARG IMAGE_ARCH=amd64
+#
+ENV CGO_ENABLED=0 GOOS=linux GOARCH=$IMAGE_ARCH GO111MODULE=on
+WORKDIR /root
+COPY . .
+RUN go build -ldflags "-w -s" -o /proxy
+
+FROM amd64/debian AS step_1
+ENV TARGET_ARCH=x86_64
+WORKDIR /root
+RUN apt-get -qq update && DEBIAN_FRONTEND=noninteractive apt-get -qq install -y \
+        build-essential musl-dev musl-tools tar wget git
+RUN git clone https://github.com/sabotage-linux/kernel-headers.git
+RUN wget https://sourceforge.net/projects/traceroute/files/traceroute/traceroute-2.1.0/traceroute-2.1.0.tar.gz/download \
+        -O traceroute-2.1.0.tar.gz
+RUN tar xvf traceroute-2.1.0.tar.gz \
+    && cd traceroute-2.1.0 \
+    && make -j4 CC=musl-gcc CFLAGS="-I/root/kernel-headers/${TARGET_ARCH}/include" LDFLAGS="-static"
+
+FROM scratch AS step_2
+ENV PATH=/
+COPY --from=step_0 /proxy /
+COPY --from=step_1 /root/traceroute-2.1.0/traceroute/traceroute /
+ENTRYPOINT ["/proxy"]