Would it be possible to add TZ environment variables?

I don't know how to set the time zone variable, an example that works is mariadb:latest, amazoncorretto:21

this is example docker-compose.yaml: 
```
version: '3.8'
  server-a:
    container_name: server-a
    image: mendhak/http-https-echo
    environment:
      TZ: Europe/Warsaw
    ports:
      - "8091:8080"
```