set workdir

Signed-off-by: Jessica Frazelle <acidburn@docker.com>

ykpersonalize/Dockerfile

@@ -38,4 +38,6 @@ RUN buildDeps=' \
 	&& rm -rf /usr/src/ykpersonalize \
 	&& apt-get purge -y --auto-remove $buildDeps
 
+WORKDIR /root/
+
 CMD [ "ykpersonalize", "--help" ]

yubico-piv-tool/Dockerfile

@@ -14,4 +14,6 @@ RUN apt-get update && apt-get install -y \
 	yubico-piv-tool \
 	&& rm -rf /var/lib/apt/lists/*
 
+WORKDIR /root/
+
 CMD [ "yubico-piv-tool", "--help" ]