Deploy BPMN process with external script resource via REST API on heroku

curl-rest.sh

#!/bin/sh

APP=heroku-app-1234
HOST=http://$APP.herokuapp.com
API=$HOST/api

USERNAME=root
PASSWORD=12345678
SCRIPT=MyTestScript.groovy
PROCESS=process.bpmn20.xml

TRACE=/dev/stdout
# to write output to file use something like:
#TRACE=deployment.trace

# login
curl -v -w "\n" --cookie-jar cookie.txt \
  -H "Accept: application/json" \
  -d "username=$USERNAME" \
  -d "password=$PASSWORD" \
  $API/admin/auth/user/default/login/cockpit

# deploy
curl --trace-ascii "$TRACE" -w "\n" --cookie cookie.txt \
  -H "Accept: application/json" \
  -F "deployment-name=rest-test" \
  -F "enable-duplicate-filtering=false" \
  -F "deploy-changed-only=false" \
  -F "com/plexiti/test/MyTestScript.groovy=@$SCRIPT;filename=com/plexiti/test/MyTestScript.groovy" \
  -F "process.bpmn=@$PROCESS" \
  $API/engine/engine/default/deployment/create

# start
curl -v -w "\n" --cookie cookie.txt \
  -H "Accept: application/json" \
  -H "Content-Type: application/json" \
  -d "{}" \
  $API/engine/engine/default/process-definition/key/testProcess/start

MyTestScript.groovy

println "Hello world"

execution.setVariable("groovy", "works")

process.bpmn20.xml

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://www.omg.org/spec/BPMN/20100524/MODEL" xmlns:camunda="http://activiti.org/bpmn" xmlns:bpmndi="http://www.omg.org/spec/BPMN/20100524/DI" xmlns:di="http://www.omg.org/spec/DD/20100524/DI" xmlns:dc="http://www.omg.org/spec/DD/20100524/DC" id="Definitions_1" targetNamespace="http://bpmn.io/schema/bpmn">
  <process id="testProcess" name="Test Process" isExecutable="true">
    <startEvent id="start" />

    <sequenceFlow id="flow1" sourceRef="start" targetRef="script" />

    <scriptTask id="script" name="Script" scriptFormat="groovy" camunda:resource="deployment://com/plexiti/test/MyTestScript.groovy" />

    <sequenceFlow id="flow2" sourceRef="script" targetRef="wait" />

    <userTask id="wait" name="Wait" />

    <sequenceFlow id="flow3" sourceRef="wait" targetRef="end" />

    <endEvent id="end" />

  </process>
  <bpmndi:BPMNDiagram id="BPMNDiagram_1">
    <bpmndi:BPMNPlane id="BPMNPlane_1" bpmnElement="testProcess">
      <bpmndi:BPMNShape id="_BPMNShape_StartEvent_2" bpmnElement="start">
        <dc:Bounds x="173" y="102" width="36" height="36" />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNShape id="Task_06xwck2_di" bpmnElement="script">
        <dc:Bounds x="259" y="80" width="100" height="80" />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge id="SequenceFlow_1poioba_di" bpmnElement="flow1">
        <di:waypoint x="209" y="120" />
        <di:waypoint x="259" y="120" />
        <bpmndi:BPMNLabel>
          <dc:Bounds x="189" y="110" width="90" height="20" />
        </bpmndi:BPMNLabel>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNShape id="Task_0yaarbf_di" bpmnElement="wait">
        <dc:Bounds x="409" y="80" width="100" height="80" />
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge id="SequenceFlow_10xhvj9_di" bpmnElement="flow2">
        <di:waypoint x="359" y="120" />
        <di:waypoint x="409" y="120" />
        <bpmndi:BPMNLabel>
          <dc:Bounds x="339" y="110" width="90" height="20" />
        </bpmndi:BPMNLabel>
      </bpmndi:BPMNEdge>
      <bpmndi:BPMNShape id="EndEvent_186k1oo_di" bpmnElement="end">
        <dc:Bounds x="591" y="102" width="36" height="36" />
        <bpmndi:BPMNLabel>
          <dc:Bounds x="564" y="138" width="90" height="20" />
        </bpmndi:BPMNLabel>
      </bpmndi:BPMNShape>
      <bpmndi:BPMNEdge id="SequenceFlow_06vp2xn_di" bpmnElement="flow3">
        <di:waypoint x="509" y="120" />
        <di:waypoint x="591" y="120" />
        <bpmndi:BPMNLabel>
          <dc:Bounds x="505" y="110" width="90" height="20" />
        </bpmndi:BPMNLabel>
      </bpmndi:BPMNEdge>
    </bpmndi:BPMNPlane>
  </bpmndi:BPMNDiagram>
</definitions>

Many thanks, this helped me a lot.