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compose-file: note that environment source isn't supported by stack deploy #24812

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compose-file: note that environment source isn't supported by stack deploy #24812

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compose-file: note that environment source isn't supported by stack d…
lacatoire Apr 17, 2026
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review: broaden content to configs content source and link external
lacatoire Apr 17, 2026
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7 changes: 7 additions & 0 deletions content/reference/compose-file/configs.md
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Expand Up @@ -87,4 +87,11 @@ configs:
environment: "SIMPLE_CONFIG_VALUE"
```

> [!IMPORTANT]
>
> The `environment` and `content` sources aren't supported by
> `docker stack deploy`: the command fails to read the config. Use the
> `file` source, or an [`external`](/manuals/engine/swarm/configs.md)
> config created with `docker config create`.

If `external` is set to `true`, all other attributes apart from `name` are irrelevant. If Compose detects any other attribute, it rejects the Compose file as invalid.
7 changes: 7 additions & 0 deletions content/reference/compose-file/secrets.md
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Expand Up @@ -39,6 +39,13 @@ secrets:
environment: "OAUTH_TOKEN"
```

> [!IMPORTANT]
>
> The `environment` source isn't supported by `docker stack deploy`:
> the command fails to read the secret. Use the `file` source, or an
> [`external`](/manuals/engine/swarm/secrets.md) secret created with
> `docker secret create`.

## Additional resources

For more information, see [How to use secrets in Compose](/manuals/compose/how-tos/use-secrets.md).