Add misisng iproute2 package, fail on errors

Dockerfile

@@ -12,5 +12,6 @@ COPY --from=opam /home/opam/unipi.spt /unipi.spt
 COPY --from=opam /home/opam/solo5-elftool /usr/local/bin/solo5-elftool
 COPY --from=opam /home/opam/solo5-spt /usr/local/bin/solo5-spt
 COPY entrypoint.sh /entrypoint.sh
+RUN apt update && apt install -y iproute2
 EXPOSE 80
 ENTRYPOINT ["/entrypoint.sh", "/unipi.spt"]

entrypoint.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/sh -e
 
 if [ "$#" -lt 1 ]; then
 	echo Must provide the unikernel as argument >&2