First read about both of them, then you will find that such an answer as below, is superfluous Maybe it is even the goal of the project to make you understand. ;)

docker run -v /dev/log:/dev/log -it --network host dovecot docker run -v /dev/log:/dev/log -it --network host --entrypoint /bin/bash dovecot

im trying to make use of your Docker image for a college proyect, but i want to know if there is any sort of guide of how to run it. Im kinda new on devecot and Docker so it will be really helpfull.