Docker-machine and Git branch in the bash prompt

.bash_profile

parse_git_branch() {
     git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/ on \"\1\" branch/'
}

__docker_machine_ps1 () {
    local format=${1:- [%s]}
    if test ${DOCKER_MACHINE_NAME}; then
        local status
        if test ${DOCKER_MACHINE_PS1_SHOWSTATUS:-false} = true; then
            status=$(docker-machine status ${DOCKER_MACHINE_NAME})
            case ${status} in
                Running)
                    status=' R'
                    ;;
                Stopping)
                    status=' R->S'
                    ;;
                Starting)
                    status=' S->R'
                    ;;
                Error|Timeout)
                    status=' E'
                    ;;
                *)
                    # Just consider everything elase as 'stopped'
                    status=' S'
                    ;;
            esac
        fi
        printf -- "${format}" "${DOCKER_MACHINE_NAME}${status}"
    fi
}

export PS1="\u@\h \[\033[32m\]\w\[\033[33m\]\$(parse_git_branch)\[\033[00m\]\$(__docker_machine_ps1 \" \[\e[36m\](\\\"%s\\\" machine)\[\e[m\]\") \n$ "