%YAML 1.2
---
version: 1.1

provisioner_1:
  hcl_type: block
  hcl_name: provisioner

  shell:
    hcl_type: label

    environment_vars:
      - FOO=hello world

    inline:
      - echo Adding file to Docker Container
      - "echo \"FOO is $FOO\" > example.txt"

provisioner_2:
  hcl_type: block
  hcl_name: provisioner

  shell:
    hcl_type: label

    inline:
      - echo Running ${var.docker_image} Docker image.
...