First pass at a dockerized toolchain.

I've seen a lot more failures. Compose is not the latest. It seems to
sort of work. We should probably parameterize Docker and Compose
versions to ensure we're installing a consistent toolchain.

Signed-off-by: Chad Metcalf <chad@docker.com>

extras/bashrc

@@ -0,0 +1,12 @@
+# If not running interactively, don't do anything
+[ -z "$PS1" ] && return
+
+export HISTTIMEFORMAT="%d/%m/%y %T "
+export PS1='\u@\h:\W \$ '
+alias l='ls -CF'
+alias la='ls -A'
+alias ll='ls -alF'
+alias ls='ls --color=auto'
+source /etc/profile.d/bash_completion.sh
+export PS1="\[\e[31m\][\[\e[m\]\[\e[38;5;172m\]\u\[\e[m\]@\[\e[38;5;153m\]\h\[\e[m\] \[\e[38;5;214m\]\W\[\e[m\]\[\e[31m\]]\[\e[m\]\\$ "
+