Make the save to database configuration as environment variables

[fatman00]

Right now I am running openspeedtest using docker compose and was wondering if it is possible to configure it using environment variables to log the tests to a database instead of having to change or mount the index.html file in the container.

Current docker-compose file:

services:
    speedtest:
        restart: unless-stopped
        container_name: openspeedtest
        image: openspeedtest/latest
        networks:
          - traefik-public
        labels:
          - "traefik.enable=true"
          - "traefik.http.services.speedtest.loadbalancer.server.port=3000"
          - "traefik.http.routers.speedtest.priority=100"
          - "traefik.http.routers.speedtest.tls=true"
          - "traefik.http.routers.speedtest.rule=Host(`netbox.local`) && PathPrefix(`/speedtest`)"
          - "traefik.http.routers.speedtest.middlewares=strip-prefix"
          - "traefik.http.middlewares.strip-prefix.stripprefix.prefixes=/speedtest"
          - "traefik.http.middlewares.limit.buffering.maxRequestBodyBytes=35000000"
          - "traefik.http.middlewares.limit.buffering.memRequestBodyBytes=35000000"
          - "traefik.http.middlewares.limit.buffering.maxResponseBodyBytes=35000000"
          - "traefik.http.middlewares.limit.buffering.memResponseBodyBytes=35000000"
## FIXES found here: https://github.com/openspeedtest/Docker-Image/issues/9


networks:
  traefik-public:
    external: true