Dockerfile

FROM python:3.10

# install libzmq with drafts enabled
ENV ZMQ_VERSION=4.3.4 \
    PREFIX=/usr/local \
    CPU_COUNT=4
RUN wget https://github.com/zeromq/libzmq/releases/download/v${ZMQ_VERSION}/zeromq-${ZMQ_VERSION}.tar.gz -O libzmq.tar.gz \
 && tar -xzf libzmq.tar.gz \
 && cd zeromq-${ZMQ_VERSION} \
 && ./configure --prefix=${PREFIX} --enable-drafts \
 && make -j${CPU_COUNT} \
 && make install

# install pyzmq with drafts enabled
 ENV ZMQ_PREFIX=${PREFIX} \
     ZMQ_DRAFT_API=1
RUN pip install -v --no-binary pyzmq --pre pyzmq

# add test script
COPY test.py /tmp/test.py

test.py

import time

import zmq

ctx = zmq.Context.instance()
radio = ctx.socket(zmq.RADIO)
dish = ctx.socket(zmq.DISH)
dish.rcvtimeo = 1_000  # 1 second timeout
dish.bind('udp://*:64067')
dish.join('1')
radio.connect('udp://127.0.0.1:64067')
for i in range(10):
    time.sleep(0.1)
    radio.send(f'{i:03}'.encode('ascii'), group='1')

    msg = dish.recv_string()
    print("received", msg)