From official documentation: When the template engine runs, it removes the contents inside of {{ and }}, but it leaves the remaining whitespace exactly as is. The curly brace syntax of template declarations can be modified with special characters to tell the template engine to chomp whitespace. {{- (with the dash and space added) indicates that whitespace should be chomped left, while -}} means whitespace to the right should be consumed.

But I try all variations with no success. Have anyone solution how to place yaml inside yaml? I don't want to use range

apiVersion: v1
kind: Pod
metadata:
  name: app
  labels:
    app: app
spec:
  containers:
  - name: app
    image: image
    volumeMounts:
      - mountPath: test
        name: test
    resources:
{{ toYaml .Values.pod.resources | indent 6 }}
  volumes:
  - name: test
    emptyDir: {}

when I use this code without -}} it's adding a newline:

    resources:
      limits:
        cpu: 100m
        memory: 128Mi
      requests:
        cpu: 20m
        memory: 64Mi

  volumes:
  - name: test
    emptyDir: {}

but when I use -}} it's concate with another position.

resources:
  limits:
    cpu: 100m
    memory: 128Mi
  requests:
    cpu: 20m
    memory: 64Mi
  volumes: <- shoud be in indent 2
- name: test
  emptyDir: {}

values.yaml is

pod:
  resources:
    requests:
      cpu: 20m
      memory: 64Mi
    limits:
      cpu: 100m
      memory: 128Mi