bosh-cli | BOSH CLI v2+ | Cloud library

It's not clear for me from the documentation if it's even possible to pass one job's output to the another job (not from task to task, but from job to job).

I don't know if conceptually I'm doing the right thing, maybe it should be modeled differently in Concourse, but what I'm trying to achieve is having pipeline for Java project split into several granular jobs, which can be executed in parallel, and triggered independently if I need to re-run some job.

How I see the pipeline:

1. First job:
   • pulls the code from github repo
   • builds the project with maven
   • deploys artifacts to the maven repository (mvn deploy)
   • updates SNAPSHOT versions of the Maven project submodules
   • copies artifacts (jar files) to the output directory (output of the task)
2. Second job:
   • picks up jar's from the output
   • builds docker containers for all of them (in parallel)
3. Pipeline goes on

I was unable to pass the output from job 1 to job 2. Also, I am curious if any changes I introduce to the original git repo resource will be present in the next job (from job 1 to job 2).

So the questions are:

1. What is a proper way to pass build state from job to job (I know, jobs might get scheduled on different nodes, and definitely in different containers)?
2. Is it necessary to store the state in a resource (say, S3/git)?
3. Is the Concourse stateless by design (in this context)?
4. Where's the best place to get more info? I've tried the manual, it's just not that detailed.

What I've found so far:

1. outputs are not passed from job to job
2. Any changes to the resource (put to the github repo) are fetched in the next job, but changes in working copy are not

Minimal example (it fails if commented lines are uncommented with error: missing inputs: gist-upd, gist-out):