ALLOWED_IFRAME_HOSTS cannot contain multiple values #2
Description
Summary
The ALLOWED_IFRAME_HOSTS env variable cannot contain multiple values, at least not in the same way ALLOWED_IFRAME_SOURCES does.
What is the expected correct behavior?
Both variables should handle multiline values.
Possible fixes
It is still possible to wrap ALLOWED_IFRAME_HOSTS value with quotes to have the same behaviour. It's just misleading.
I guess it comes from the way the var is push here ? https://github.com/tiredofit/docker-bookstack/blob/dd42494eab6e3b3cf648c74ae2c8e8e3ab9e18bb/install/etc/cont-init.d/30-bookstack#L559