---------------------- Yes, the

$merge

key can be used multiple times within the same mapping in Garden. The

$merge

key allows you to merge two objects together and can be used to avoid repeating a set of commonly repeated values. However, the position of the

$merge

key matters. If the keys being merged overlap between the two objects, the value that's defined later is chosen. Here's an example from the Garden documentation ():

yaml
kind: Project
variables:
  - commonEnvVars:
      LOG_LEVEL: info
      SOME_API_KEY: abcdefg
      EXTERNAL_API_URL: <http://api.example.com>

yaml
kind: Deploy
type: container
name: service-a
spec:
  env:
    $merge: ${var.commonEnvVars}
    OTHER_ENV_VAR: something
    LOG_LEVEL: debug  # <- This overrides the value set in commonEnvVars, because it is below the $merge key
---
kind: Deploy
type: container
name: service-b
services:
  env:
    SOME_API_KEY: default # <- Because this is above the $merge key, the API_KEY from commonEnvVars will override this
    $merge: ${var.commonEnvVars}

In this example, the

$merge

key is used to share a common set of environment variables between two services. The

LOG_LEVEL

in

service-a

and

SOME_API_KEY

in

service-b

are overridden because they are defined after the

$merge

key. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

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---------------------- I apologize for the confusion. You're correct, the provided example does not demonstrate the use of

$merge

multiple times within the same mapping. Unfortunately, none of the provided knowledge sources explicitly demonstrate or discuss using

$merge

multiple times within the same mapping. For the most accurate and detailed information, I would recommend referring to the official Garden documentation or reaching out to the Garden community for further assistance. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

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