docker-compose image named: “prefix_%s_1” instead of “%s”

Question

When I set up a couple of Docker containers in docker-compose.yaml file with links, the name of the containers ends up being of the format prefix_%s_1

Answer 1

Docker compose will use the name of the directory with your compose file as the name of the project unless you set if via the -p option

-p, --project-name NAME     Specify an alternate project name (default: directory name)

Compose supports declaring default environment variables in an environment file named .env placed in the folder where the docker-compose command is executed (current working directory).

Where you'll want to set COMPOSE_PROJECT_NAME