add byobu

Dockerfile

@@ -33,7 +33,7 @@ ENV BBR_VERSION="1.8.1" \
 
 #--- Packages list, ruby env for COA and cf plugins
 ENV INIT_PACKAGES="apt-utils apt-transport-https ca-certificates curl openssh-server openssl sudo unzip wget" \
-    TOOLS_PACKAGES="apg bash-completion colordiff git-core less locales nano nodejs python3-tabulate python3-openstackclient s3cmd silversearcher-ag supervisor tmux vim" \
+    TOOLS_PACKAGES="apg bash-completion colordiff git-core less locales nano nodejs python3-tabulate python3-openstackclient s3cmd silversearcher-ag supervisor tmux byobu vim" \
     NET_PACKAGES="dnsutils iproute2 iputils-ping ldap-utils mtr-tiny netbase netcat net-tools tcpdump whois" \
     DEV_PACKAGES="python-dev build-essential libc6-dev libffi-dev libssl-dev libxml2-dev libxslt1-dev libpq-dev libsqlite3-dev libmysqlclient-dev zlib1g-dev libcurl4-openssl-dev" \
     RUBY_PACKAGES="gawk g++ gcc autoconf automake bison libgdbm-dev libncurses5-dev libtool libyaml-dev pkg-config sqlite3 libgmp-dev libreadline6-dev" \