Ingest url duplication on restarting the docker container

[skrispyb]

When restarting the docker container the config file under /usr/local/nginx/conf/xplex.conf adds the ingest url configuration at the end of the file resulting in duplication of ingest url and it keeps on added every time you restart the docker container.

[debloper]

Caused due to the container run command included the ingests from ENV on each run; and we weren't sorting & filtering the ingests for uniqueness, leading to multiple copies of ingest entries.

The mechanism was updated since c653591. Ingests are no longer set with the ENVs, but with the webapp instead.

This keeps the process simple & easy; and obvious bugs like this are immediately noticeable.

# you can now try the latest 1.0.0 release version with:
docker run -d --name xplex -p 80:80 -p 1935:1935 xplex/xplex:1.0.0