Variable to create a results directory that can get mapped to an external directory

[tesanchez]

As port of an automation execution we need to retrieve results that should be accessible by multiple parties. I believe a good way of doing this is to generate a variable that can be assigned a path to where all the results go and from their map it to a similar directory in a repo or local space

[nazwr]

We can hard code the reporting directory inside of the container for runs - something like /readyapi/reports and then use a Docker volume to let the users map a host directory at build time:

-v [local_path]:/readyapi/reports

This could be used as an alternative option to getting composite projects into the container - instead of copying them in at build time (removing local dependencies), the container mounts the directory at run time and then reads the files (useful for when the container will always have access to the file system).