Accept `CODE_EXECUTION_API_KEY` as alias of `API_KEY` in `sandbox`

[Boris Polonsky]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

The divergence between

dify/docker/docker-compose.yaml

Line 248 in eab0ac3

 CODE_EXECUTION_API_KEY: ${CODE_EXECUTION_API_KEY:-dify-sandbox} 

and

dify/docker/docker-compose.yaml

Line 345 in eab0ac3

 API_KEY: ${API_KEY:-dify-sandbox} 

makes it harder to maintain these configurations in a single template for multiple components(i.e. api and sandbox) in helm chart.

2. Additional context or comments

I'm contributor of dify-helm and the riddance of this divergence would definitely simplify helm chart definition. Since sandbox is close-sourced, I could not make a PR and would like to request that dify consider this compatibility enhancement.

3. Can you help us with this feature?

• I am interested in contributing to this feature.

[takatost]

Thx for the feedback! I'm merging the two parameters.