Test passing artifacts between triggered builds

get-artifacts-from-triggered-build.sh

#!/bin/bash

buildkite-agent artifact download test.txt .
cat test.txt

pipeline.yml

steps:
  - trigger: "trigger-artifact-test-2"
    label: ":rocket: Trigger trigger-test-2"
    build:
      meta_data:
        triggering-job-id: "${BUILDKITE_JOB_ID}"  
  - wait
  - label: "Get artifacts from triggered build"
    command: bash ./get-artifacts-from-triggered-build.sh

pipeline2.yml

steps:
  - label: ":llama:"
    command: bash ./upload-artifacts.sh

test.txt

hello world

upload-artifacts.sh

#!/bin/bash
set -euxo pipefail

triggered_job_id="$(buildkite-agent meta-data get triggering-job-id)"
echo "triggered by $triggered_job_id"

buildkite-agent artifact upload --job "$triggered_job_id" test.txt