add less and e3 to the image

e3 is a tiny editor and less is a convenient pager.

Both are essential for investigation/debugging and
configuring work. Additional footprint is just 414 Kb.

Signed-off-by: Ed Bartosh <[email protected]>

Author: bart0sh

images/base/Dockerfile

@@ -45,7 +45,7 @@ RUN clean-install \
       apt-transport-https ca-certificates curl software-properties-common gnupg2 lsb-release \
       systemd systemd-sysv libsystemd0 \
       conntrack iptables iproute2 ethtool socat util-linux mount ebtables udev kmod aufs-tools \
-      bash rsync \
+      bash rsync less e3 \
     && find /lib/systemd/system/sysinit.target.wants/ -name "systemd-tmpfiles-setup.service" -delete \
     && rm -f /lib/systemd/system/multi-user.target.wants/* \
     && rm -f /etc/systemd/system/*.wants/* \