If you expect that IP address might change you could go the extra mile and do something like

docker container run -e "DOCKER_HOST=$(ip -4 addr show docker0 | grep -Po 'inet \K[\d.]+')"

..., this way every time you run your container, it’ll have the IP address available inside the container set to the DOCKER_HOST environment variable.

volumes:

• "/etc/timezone:/etc/timezone:ro"
• "/etc/localtime:/etc/localtime:ro"