There is quick information on running mailman on docker
   at [1]https://github.com/maxking/docker-mailman#running
   It would be great to, eventually, get the list onto blockchains so that
   everybody stays connected.
   Here are the instructions for running mailman from the link:
$ apt install [2]docker.io docker-compose
$ mkdir -p /opt/mailman/core
$ mkdir -p /opt/mailman/web
$ git clone [3]https://github.com/maxking/docker-mailman
$ cd docker-mailman
# Change some configuration variables
$ docker-compose up -d

References

   1. https://github.com/maxking/docker-mailman#running
   2. http://docker.io/
   3. https://github.com/maxking/docker-mailman