Feature: adding a Dev Container to Nomad

[star3am]

This PR adds a Dev Container to nomad repository. Enabling us to run Nomad in a Github Codespace or locally using a Dev Container

When we create a Github Codespace a new VSCode window will open

The Codespace will display the output of the postCreateCommand bash .devcontainer/install-nomad.sh and the postStartCommand bash -c 'nomad -version && nomad agent -dev'

Port 4646 Nomad UI will be available in the Ports tab

We can right click on that port and open it ina. new browser window

And we will be greeted by the Nomad UI

This is to my knowledge the fastest way to launch Nomad for demo or evaluation purposes live on the internet.

Thank you for this great project!

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[tgross]

Hi @star3am! I think you may have intended to make this in a private fork? I'm not sure what it's supposed to be for. I know what GitHub codespaces are, I don't know why you'd want to add them to someone else's project if they already have a detailed contributing guide with setup. You cannot run Nomad properly this way, so it's not a particularly useful development setup.

You didn't sign the CLA so I can't really review this. But at a glance the JSON file isn't valid JSON. And Nomad already has a container image definition. Any container image would need to use that instead of a random unpinned Ubuntu image.

[star3am]

Thank you for the feedback @tgross

I had some trouble getting the base image of Nomad to run, because the docker-in-docker devcontainer feature needed bash which Nomad image did not have, that is why I use the ubuntu as a base image.

I know what GitHub codespaces are, I don't know why you'd want to add them to someone else's project if they
already have a detailed contributing guide with setup.

It was intended that the dev container belongs to the nomad repository for everyone to use and expand on. and more specifically run nomad with a minimal set of features in a Github Codespace / Dev Container.

That said, I understand your feedback with regards to nomad, and I am closing this PR now.

Thank you for your time.