ZSH lazy-loading of Docker/Docker-Compose via Docker-Machine/Docker-Toolbox

.zshrc

docker() {
    unset -f docker
    VBoxManage list runningvms | grep -E "^\"dev\"" >/dev/null 2>/dev/null || docker-machine start dev
    eval "$(docker-machine env dev)"
    docker "$@"
}

fig() {
    unset -f fig
    eval "$(docker-machine env dev)"
    alias fig="docker-compose"
    docker-compose "$@"
}