Underscore vs hyphen in Docker Container and Volume Names

[JohnKallies]

At some point, the authors of Docker software changed the character used as a separator, from an underscore (“_”) to a hyphen (“-“). This means that the default Docker service URL values in your environment files may not be correct. This will cause the docker-compose commands in the Quickstart and Development configurations to fail. If this affects your Quickstart demo, then try these steps:

1. In the Docker Desktop dashboard, look at the list of containers. You can also run ‘docker ps -a’ and ‘docker volume list’ in a terminal window.
2. Look at the container and volume names, starting with "osmt_". Do they have underscores or hyphens?
3. Check values in your osmt-quickstart.env file. Make them match the actual container names on your system:
   • ELASTICSEARCH_URI=http://osmt_quickstart_elasticsearch_1:9200
   • REDIS_URI=osmt_quickstart_redis_1:6379

You can see this site for additional context:
• https://stackoverflow.com/questions/69464001/docker-compose-container-name-use-dash-instead-of-underscore