add shell as environment possibility
add shell as environment possibility

Now you are forced to learn a tool like screen, tmux, byobu, now add the
possibility to just run environment wherever you need it.

Signed-off-by: BlackEagle <6c5c99a37e4dd8841971a4b7c7580d6fcba68554@gmail.com>

dockerwest/compose-magento2,dockerwest/compose-magento2