[英]How to specify a service in my docker-compose.yml file that has its own docker-compose.yml file in docker hub?
[英]How to verify my docker-compose.yml?
我正在使用 docker-compose 設置容器堆棧。 然而通過運行
docker-compose up
我收到一條相當神秘的錯誤消息:
Traceback (most recent call last):
File "/usr/local/bin/docker-compose", line 9, in <module>
load_entry_point('docker-compose==1.4.2', 'console_scripts', 'docker-compose')()
File "/usr/local/lib/python2.7/dist-packages/compose/cli/main.py", line 39, in main
command.sys_dispatch()
File "/usr/local/lib/python2.7/dist-packages/compose/cli/docopt_command.py", line 21, in sys_dispatch
self.dispatch(sys.argv[1:], None)
File "/usr/local/lib/python2.7/dist-packages/compose/cli/command.py", line 27, in dispatch
super(Command, self).dispatch(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/compose/cli/docopt_command.py", line 24, in dispatch
self.perform_command(*self.parse(argv, global_options))
File "/usr/local/lib/python2.7/dist-packages/compose/cli/command.py", line 57, in perform_command
verbose=options.get('--verbose'))
File "/usr/local/lib/python2.7/dist-packages/compose/cli/command.py", line 78, in get_project
config.load(config_details),
File "/usr/local/lib/python2.7/dist-packages/compose/config.py", line 138, in load
for service_name, service_dict in list(dictionary.items()):
AttributeError: 'NoneType' object has no attribute 'items'
如何調試? 我已經檢查過 yml 是否有效,但它不起作用。
我忘記保存我docker-compose.yml
,所以它是空的。
我偶然發現了這個問題的解決方案,該解決方案關於使描述行為的錯誤消息更好。
如果根本不存在docker-compose.yml
收到一條很好的消息:
Can't find a suitable configuration file in this directory or any parent. Are you in the right directory?
Supported filenames: docker-compose.yml, docker-compose.yaml, fig.yml, fig.yaml
在docker-compose 的問題列表中宣布,在即將發布的 1.5 版本中會有更好的錯誤消息:
Top level object needs to be a dictionary. Check your .yml file that you have defined a service at the top level.
從版本 1.7.1 開始,指示您的文件為空的錯誤消息讀取:
ERROR: Top level object in './docker-compose.yml' needs to be an object not '<type 'NoneType'>'.
鑒於最新版本,錯誤消息非常簡單:
$ docker -v
Docker version 19.03.13, build 4484c46d9d
$ docker build .
failed to solve with frontend dockerfile.v0: failed to create LLB definition: the Dockerfile cannot be empty
因此,為了便於使用,請考慮升級您的 docker 引擎。
此錯誤表示YML格式錯誤。 對我來說,我在錯誤的目錄中執行了docker-compose up
命令。
您始終可以驗證自己是否正在嘗試通過VIM docker-compose.yml
docker-compose.yml
執行更新docker-compose.yml
VIM docker-compose.yml
以查看其是否從控制台內部更新,這可以告訴您是否尚未保存yml文件或在不同的目錄上。
如果您確定您位於正確的目錄中,並且yml文件已更新,則可以將yml代碼放入在線YML驗證器中,以查看其是否存在格式錯誤。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.