Node in Docker shuts down when breakpoint hit

I've looked for a solution for this, but haven't been successful. I'm running node in a docker container and trying to debug it. I've got the debugger attached and can hit breakpoints, but when one hits the server shuts down... apparently gracefully.

Debug config:

Node interpreter:

Logging looks normal and as soon as any breakpoint hits I get

Gracefully stopping... (press Ctrl+C again to force)

Process finished with exit code 0

I'm sure I'm doing something silly, but I'm not sure what.