diff --git a/Dockerfile b/Dockerfile
index 8aba0e7e5..51a494269 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -72,6 +72,7 @@ RUN \
       ubuntu-keyring \
       vhd-util \
       debootstrap \
+      procps \
       yum \
       yum-utils \
   && apt-get clean \