Easier said than done? Still let's try to make this happen in coming months, as @tim-moody has done fully migrating WordPress and MediaWiki etc (from Apache to NGINX) here: PR #2086

Refs:

#224 NGINX proposal
PR #2052 NGINX (main PR)
#2084 Enable & validate Nextcloud 18.0.0 on release "2020-01-16"
#2108 Does nextcloud_allow_public_ips: True/False work with NGINX?
PR #2111 Nextcloud minimal cleanup for code readability
#2112 download.nextcloud.com often throttles downloads to 100kbit/sec