docker_config/mqtt/config_templates/protected/mosquitto.conf

listener 1883
persistence true
persistence_location /mosquitto/data/

## Authentication ##
# Create passwd file:       mosquitto_passwd -c /mosquitto/config/passwd <user_name>
# You need to make down && make up to use the new passwd file
allow_anonymous false
password_file /mosquitto/config/passwd

## Logging - possibilities: error, warning, notice, information, all
log_type warning