Why doesn't my PLANTUML_CONFIG_FILE environment variable work in Docker?

[cosmolin]

My docker-compose.yml is written as follows:

version: '3'
services:

  server:
    container_name: plantuml-server
    image: plantuml/plantuml-server
    ports:
      - 8090:8080
    volumes:
      - ./config.puml:/srv/config.puml
    environment:
      - PLANTUML_CONFIG_FILE=/srv/config.puml

My config.puml is written as follows:

skinparam defaultTextAlignment center

Is there anything wrong?

[cosmolin]

Fixed