Array in yml file as context is not supported

[boatrainlsz]

I have a context.yml file contains:
ARRAY: ['elem1', 'elem2', 'elem3']
template.conf file contains:
array: {{ ARRAY }}

I did templating and expected output is:
array: ['elem1', 'elem2', 'elem3']
and actual output is:
array: <[]interface {} Value>

code snippet:

package main

import (
	"fmt"
	"github.com/flosch/pongo2/v6"
	"gopkg.in/yaml.v2"
	"io/ioutil"
	"os"
)

func main() {
	//write ARRAY: ['elem1', 'elem2', 'elem3'] to context.yml
	os.WriteFile("context.yml", []byte("ARRAY: ['elem1', 'elem2', 'elem3']"), 0644)
	//write array: {{ ARRAY }} to template.conf
	os.WriteFile("template.conf", []byte("array: {{ ARRAY }}"), 0644)
	readByte, err := readFile("template.conf")
	if err != nil {
		return
	}
	context := pongo2.Context{}
	contextFile, err := os.Open("context.yml")
	if err != nil {
		return
	}
	out := make(map[string]interface{})
	if err := yaml.NewDecoder(contextFile).Decode(out); err != nil {
		return
	}
	fmt.Println("yml decode: ", out)
	contextFile.Seek(0, 0)
	if err := yaml.NewDecoder(contextFile).Decode(&context); err != nil {
		return
	}
	temp, err := pongo2.FromBytes(readByte)
	if err != nil {
		return
	}
	output, err := temp.Execute(context)
	if err != nil {
		return
	}
	fmt.Println(output)
}
func readFile(path string) ([]byte, error) {
	file, err := os.Open(path)
	if err != nil {
		return nil, err
	}
	defer file.Close()
	byteValue, err := ioutil.ReadAll(file)
	return byteValue, nil

}