Redis signal-handler not terminating in response to SIGTERM

For reference: https://github.com/docker/for-linux/issues/397#issuecomment-596800987

I'm running redis:5.0-alpine and docker-compose down, which I believe uses docker stop, which starts with a SIGTERM and then after 10 seconds of inactivity, a SIGKILL.

redis receives the SIGTERM, and signal-handler appears to do nothing:

api-redis.20200217_0.log-22903-1:M 17 Feb 2020 15:53:21.663 - Reading from client: Connection reset by peer
api-redis.20200217_0.log-22904-1:M 17 Feb 2020 15:53:21.663 - Reading from client: Connection reset by peer
api-redis.20200217_0.log-22905-1:M 17 Feb 2020 15:53:21.663 - Reading from client: Connection reset by peer
api-redis.20200217_0.log-22906-1:M 17 Feb 2020 15:53:21.663 - Reading from client: Connection reset by peer
api-redis.20200217_0.log:22907:1:signal-handler (1581954802) Received SIGTERM scheduling shutdown...