When calling the BitGoExpress container API via an ALB, a 504 error may occur. After investigation, it seems likely that this is due to the issue described below, and I suspect that changing the keepAliveTimeout of Express can resolve it.

504 Gateway Timeout - Two EC2 Instances with Load Balancer

Note: The above reference is regarding EC2, but my environment is ECS. Therefore, it is necessary to be able to change this value externally when launching the Docker container.

Is there currently a way to externally change KeepAliveTimeout and headersTimeout when starting Docker?

Reference: https://nodejs.org/api/http.html#serverkeepalivetimeout