docker run -ti -p 1883:1883 -p 9001:9001 toke/mosquitto

mkdir -p /srv/mqtt/config/
mkdir -p /srv/mqtt/data/
mkdir -p /srv/mqtt/log/
# place your mosquitto.conf in /srv/mqtt/config/
# NOTE: You have to change the permissions of the directories
# to allow the user to read/write to data and log and read from
# config directory
# For TESTING purposes you can use chmod -R 777 /srv/mqtt/*
# Better use "-u" with a valid user id on your docker host

# Copy the files from the config directory of this project
# into /src/mqtt/config. Change them as needed for your
# particular needs.

docker run -ti -p 1883:1883 -p 9001:9001 \
-v /srv/mqtt/config:/mqtt/config:ro \
-v /srv/mqtt/log:/mqtt/log \
-v /srv/mqtt/data/:/mqtt/data/ \
--name mqtt toke/mosquitto

docker volume create --name mosquitto_data

[Unit]
Description=Mosquitto MQTT docker container
Requires=docker.service
Wants=docker.service
After=docker.service

[Service]
Environment=EXT_IP=123.123.123.123
Restart=always
ExecStart=/usr/bin/docker run -v /srv/mqtt/config:/mqtt/config -v /srv/mqtt/log:/mqtt/log -v mosquitto_data:/mqtt/data/ -p ${EXT_IP}:1883:1883 -p ${EXT_IP}:8883:8883 -p 127.0.0.1:9001:9001 --name mqtt toke/mosquitto
ExecStop=/usr/bin/docker stop -t 2 mqtt
ExecStopPost=/usr/bin/docker rm -f mqtt

[Install]
WantedBy=local.target

git clone https://github.com/toke/docker-mosquitto.git
cd docker-mosquitto
docker build .