Update install_deb_packages.sh (#85)

It is required for git push operation in the container when you use it a devel image.

manylinux2014_docker_images/install/install_deb_packages.sh

@@ -51,6 +51,7 @@ apt-get install -y --no-install-recommends \
     mlocate \
     openjdk-8-jdk \
     openjdk-8-jre-headless \
+    openssh-client \
     patchelf \
     pkg-config \
     python3-dev \