In order to send/receive messages an amqp broker is necessary, to create one simply run:
docker container run -d --rm -p 5672:5672 -p 15672:15672 rabbitmq:3.7.6-management
docker container run --rm -d \
--device=/dev/video0 \
--memory=60M \
--network=host \
--name is-webcam \
hsneto/is-webcam:1.2 \
python3 stream.py
docker container run --rm -d \
--device=/dev/video1 \
--memory=60M \
--network=host \
--name is-webcam \
hsneto/is-webcam:1.2 \
python3 stream.py --device 1