diff --git a/Dockerfile b/Dockerfile
index 241eee2..b585951 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,17 +4,17 @@
 # if the build arguments defined it will build a corresponding version instead
 # $ docker build [--build-arg UNAME_R=<raspi release>] [--build-arg RT_PATCH=<RT patch>] -t rtwg-image .
 #
-# where <raspi release> is in a form of 5.4.0-1034-raspi, 
+# where <raspi release> is in a form of 5.4.0-1034-raspi,
 #     see https://packages.ubuntu.com/search?suite=default&section=all&arch=any&keywords=linux-image-5.4&searchon=names
-# and <RT patch> is in a form of 5.4.106-rt54, 
+# and <RT patch> is in a form of 5.4.106-rt54,
 #     see http://cdn.kernel.org/pub/linux/kernel/projects/rt/5.4/older
 #
-# $ docker run -it rtwg-image bash 
+# $ docker run -it rtwg-image bash
 #
 # and then inside the docker
 # $ $HOME/linux_build && cd `ls -d */`
 # $ make ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- -j `nproc` deb-pkg
-# 
+#
 # user ~/linux_build/linux-raspi-5.4.0 $ ls -la ../*.deb
 # -rw-r--r-- 1 user user  11430676 May 17 14:40 ../linux-headers-5.4.101-rt53_5.4.101-rt53-1_arm64.deb
 # -rw-r--r-- 1 user user 487338132 May 17 14:40 ../linux-image-5.4.101-rt53-dbg_5.4.101-rt53-1_arm64.deb
@@ -32,7 +32,7 @@ ARG DEBIAN_FRONTEND=noninteractive
 # setup timezone
 RUN echo 'Etc/UTC' > /etc/timezone \
     && ln -s -f /usr/share/zoneinfo/Etc/UTC /etc/localtime \
-    && apt-get update && apt-get install -q -y tzdata apt-utils lsb-release software-properties-common \
+    && apt-get update && apt-get install -q -y tzdata apt-utils lsb-release software-properties-common openssh-client \
     && rm -rf /var/lib/apt/lists/*
 
 ARG ARCH=arm64