Document --project-name option

[SwooshyCueb]

At present, it is not possible to run multiple instances of the test runner against the same "project" at the same time, as the docker container names will overlap. Let's make the container names unique.

[korydraughn]

@alanking Didn't you run into this a long time ago? Is there an option available to help with this today?

[alanking]

The container names are generated by Compose, so you can use the --project-name option with most of the scripts to differentiate multiple instances of the same Compose project. I haven't used the option in a long time, so who knows if it's plumbed correctly all the way through, but it has worked in the past for this. The downside is that it generates new image names/tags for each project name, but they are the same underlying images, so just keep an eye on the tags and clean up as needed.

[korydraughn]

So if @SwooshyCueb or anyone else can come up with a better/maintainable way to achieve the same thing, perhaps that takes the place of the --project-name option.

[SwooshyCueb]

Looks like --project-name works fine. We should document this better.

[korydraughn]

Good. Take a swing at putting together some words. We can iterate on them.