Accept all `docker run` options

[augustohp]

An example of workflow I am interested in:

1. Someone appears with a doubt and some code I can run, it doesn't have Docker;
2. I clone the repository and start a container for it:

   $ docker run -di --name www-php -v "${PWD}:/var/www" -w "/var/wwww" -p 8080:80 php:7.2-apache
   

3. Now a bunch of dependencies are installed, amounting to a history like:

   $ docker exec -it www-php bash
   $ pecl install xdebug-2.6.0
   $ docker-php-ext-enable xdebug
   $ php bin/setup.php
   

The idea would be to use ship instead of docker run, enabling us to create a Dockerfile while we discover what is needed.