Update docker-compose files version

[Kennytian]

Description

Please include a summary of the change and which issue is fixed. Please also include relevant motivation and context. List any dependencies that are required for this change.

WARN[0000] /root/dify/docker/docker-compose.yaml: `version` is obsolete

This update resolved a WARN, please accept it.

Type of Change

• Improvement，including but not limited to code refactoring, performance optimization, and UI/UX improvement

How Has This Been Tested?

• Manual Test

Suggested Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods
• optional I have made corresponding changes to the documentation
• optional I have added tests that prove my fix is effective or that my feature works
• optional New and existing unit tests pass locally with my changes

[Kennytian]

Here is my Docker and Docker Compose version:

Docker version 25.0.5, build 5dc9bcc
Docker Compose version v2.25.0

[bowenliang123]

When did you have this warning? It never comes into my daily builds and usages.
List the command you've run.

[bowenliang123]

Furthermore, why 3 is better than 3.1 while the latter one is warned as obsolete one. Any Docker's official docs for supported value for the version field?

[takatost]

My understanding of this warn is that the version has already been deprecated, docker compose is backward compatible. I think we can delete this version, right?

[bowenliang123]

OK, I found the compatibility matrix docs here: https://docs.docker.com/compose/compose-file/compose-versioning/#compatibility-matrix

[bowenliang123]

According to Versioning, it's alright to use '3' here, better than '3.x' which could be deprecated on certain docker engine versions.

[Kennytian]

If only the major version is given (version: '3'), the latest minor version is used by default.

[bowenliang123]

LGTM.

[Kennytian]

@takatost Please review my commit code.