aws_imagebuilder_component issue with template_file - bash

Question

I need to deploy a bash script using aws_imagebuilder_component resource; I am using a template_file to populate an array inside my script. I am trying to figure out the correct way to render the template inside the imagebuilder_component resource.
I am pretty sure that the formatting of my script is the main issue :(
This is the error that I keep getting, seems like an issue with the way I am formatting the script inside the yml, can you please assist? I have not worked with image builder previously or with yamlencode.
Error: error creating Image Builder Component: InvalidParameterValueException: The value supplied for parameter 'data' is not valid. Failed to parse document. Error: line 1: cannot unmarshal string phases:... into Document.
# Image builder component
resource "aws_imagebuilder_component" "devmaps" {
name = "devmaps"
platform = "Linux"
data = yamlencode(data.template_file.init.rendered)
version = "1.0.0"
}
# template_file
data "template_file" "init" {
template = "${file("${path.module}/myscript.yml")}"
vars = {
devnames= join(" ", local.devnames)
}
}
# myscript.yml
schemaVersion: 1.0
phases:
- name: build
steps:
- name: pre-requirements
action: ExecuteBash
inputs:
commands: |
#!/bin/bash
for i in `seq 0 6`; do
nvdev="/dev/nvm${i}n1"
if [ -e $nvdev ]; then
mapdev="${devnames[i]}"
if [[ -z "$mapdev" ]]; then
mapdev="${devnames[i]}"
fi
else
ln -s $nvdev $mapdev
echo "symlink created: ${nvdev} to ${mapdev}"
fi
fi
done
#Marko
# tfvars
vols = {
data01 = {
devname = "/dev/xvde"
size = "200"
}
data01 = {
devname = "/dev/xvdf"
size = "300"
}
}
Variables.tf: populating this list "devnames" from the map object "vols", shown above
locals {
devnames = ([ for key, value in var.vols: value.devname ])
}
main: template_file is using the list "devnames" to assign its values to devnames variable; devnames variables is used inside myscript.yml
devnames = join(" ", local.devnames)
At this point, everything is working w/o issues
But when this is executed, it fails and complains about the formatting of the template that was rendered using myscript.yml.
I am doing something wrong here that I cannot figure it out
## Image builder component
resource "aws_imagebuilder_component" "devmaps" {
name = "devmaps"
platform = "Linux"
data = yamlencode(data.template_file.init.rendered)
version = "1.0.0"
}