Dash '-' vs. underscore '_' after project name in container naming

[csandor]

Great work thanks!

When I start a container with the v1.xx version of docker-compose:

docker-compose up -d <service>

the resulting container name will be: <project_name>_<service>_1

Job runs great.

When i use the go version or a v2.xx version:

docker compose up -d <service>

the resulting container name will be: <project_name>-<service>-1

See dash vs. underscore in container name.

I think docker-crontab might have the underscore (_) burnt in somewhere and tries to find the container to run the script in using that separator (/opt/crontab/projects/*.sh):

CONTAINERS=$(docker ps --format '{{.Names}}' | grep -E "^<project_name>_<container_name>.[0-9]+")

And the job won't run as would not find a running container.

docker-compose version 1.29.2, build unknown
Docker Compose version v2.15.1
Docker version 24.0.5, build ced0996