linuxmacosdockerinfrastructure

Docker container naming changed to hypens on local machine

I use docker with COMPOSE_PROJECT_NAME to dynamically create container names. Somewhere in the last 2 months something changed and my local machine generates container names with hypens.

e.g project-name-traefik-1 instead of project-name_traefik_1.

How can I change this behavior as this breaks functionality on my linux docker server which for some reason keeps the old container naming structure.

I have the latest Docker Desktop and the latest Docker on the server. I can't find anything in the documentation that points to this change.

Solution

  • Resorted to adding container_name (which wasn't previously needed).

    I'm also using the COMPOSE_PROJECT_NAME environment variable to get predictable container names.

    E.g.

    ...
    nginx:
        image: graffino/nginx:v1
        restart: unless-stopped
        container_name: ${COMPOSE_PROJECT_NAME}-nginx
...