Display information about environment before start

[stjohnjohnson]

In other services like Travis, Jenkins, Wercker, etc. the first command they run shows information about the environment. Items like:

• User
• OS Version
• SD Version
• Docker Container SHA

Examples

Travis

Wercker

[petey]

Some of this information is in the build page header, some can be extracted with a little difficulty from the existing bookend steps.

Customers I have talked to have expressed very little interest in the output of the bookends, instead asking that those are further hidden from them in the UI.

[stjohnjohnson]

Well most of it is actually metadata inside the container. And I agree it should be hidden by default, but it should also be there if we want to debug. Like what user is this build running as right now?

[jpcollins]

Agree with St John's point. We want it for debugging but hidden by default.

[stjohnjohnson]

We now show some of that information:

Code here: https://github.com/screwdriver-cd/launcher/blob/45da1242b84117ad5738d3d7d7b10d133f18d62b/launch.go#L297-L304

We should add more to it as we keep adding features.