Support loading configs from file

[wzxxing]

Describe the feature (Security related? please follow https://github.com/aws/mcp-proxy-for-aws/security/policy to report them to AWS Security directly.)

Decide whether we should implement the feature demonstrated in this PR #74

Having config file makes sense so that user can write the config in a file and launch a proxy directly, they can also track the config in git etc.

Use Case

mcp-proxy-for-aws --config config.yaml

Proposed Solution

It is possible that the endpoint parameter can be path to a file. Then we should load the config from a file.

mcp-proxy-for-aws my-bedrock-runtime-mcp-server.yaml

content of my-bedrock-runtime-mcp-server.yaml

endpoint: "https://your-service.us-east-1.amazonaws.com/mcp"
service: "bedrock-agentcore"
profile: "default"
region: "us-east-1"
read_only: false
log_level: "INFO"

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

[konippi]

Thank you for creating the issue.