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docker-docs/content/reference
Antoine C ab47fa4ee7 docs: use == operator in node.labels constraint (#23522)
## Description

https://docs.docker.com/reference/compose-file/deploy/#placement

In this section, `node.labels` must be specified. Also, it must be `==`
and not a simple `=`, an error occurs without it:

```bash
failed to update service myapp_redis: Error response from daemon: rpc error: code = Unknown desc = constraint expected one operator from ==, !=
```
2025-11-27 09:45:27 +00:00
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