我正试图将我的packer构建执行到Gitlab管道中，我在互联网上没有找到例子，但我看到了一个docker图像，所以我希望这个yaml能完成任务：
image: hashicorp/packer
stages:
- build
build:
stage: build
script:
- echo "Hello world"
- packer build ./definition.json
only:
- master
但我不理解这种行为，CI提取映像，克隆repo，然后它就这样结束了：
Skipping Git submodules setup
Usage: packer [--version] [--help] <command> [<args>]
Available commands are:
build build image(s) from template
console creates a console for testing variable interpolation
fix fixes templates from old versions of packer
inspect see components of a template
validate check that a template is valid
version Prints the Packer version
Usage: packer [--version] [--help] <command> [<args>]
Available commands are:
build build image(s) from template
console creates a console for testing variable interpolation
fix fixes templates from old versions of packer
inspect see components of a template
validate check that a template is valid
version Prints the Packer version
ERROR: Job failed: exit code 127
它甚至不打印我的echo Hello World，而且它打印了两次我应该如何使用CLI进行迭代，为什么会出现这种行为？
我找到了如何修复它，我不得不更改：
image: hashicorp/packer
进入：
image:
name: hashicorp/packer
entrypoint:
- '/usr/bin/env'
- 'PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin'