mod - docker_container_running, docker_mount_sshfs are fixed and working.
add - SSH_PORT variable.
add - check on script arguments for tag and build location.
mod - in docker_mount_sshfs, if the mount point doesn't exist, it's created.
add - the image sha resulting of the build is now extacted from the build log
mod - CONTAINER_PORTS can now support multiple ports as a list, treated by port_list
add - port_list function