Describe the problem you’re having:
i run ttrss with docker and i m wondering how to use multiple values for TTRSS_SELF_URL_PATH in docker-compose .env file

If possible include steps to reproduce the problem:
my ttrss host is running haproxy and i 'd like to be able to access ttrss from the net (i currently have 2 differents domains)

tt-rss version (including git commit id):
updated from your git repo today

Platform (i.e. Linux distro, PHP, PostgreSQL, etc) versions:
docker running within debian stretch

Please provide any additional information below:
gandhi and free DNS providers

You could show a single Host (fixed) header to your instance coming from both directions, otherwise there’s no easy way to do that.