Can you migrate a web app available via '/' to a proxied sub-URI without modifying the web app?

[itpp2012]

Francis Daly Wrote:
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> It cannot work in stock nginx just using nginx.conf normal directives.

You can with (many) proper rewrites but this does require a very close eye
on the logfiles until you have rewritten all the 40x's, and for the sake of
performance eventually have them converted to a sequence of maps.

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,274104,274109#msg-274109