Move well-known to not be hidden. Nginx will handle rewriting the path.

docker/server/Makefile

@@ -6,7 +6,7 @@ all: build push
 
 .PHONY: build
 build:
-	docker build -t $(IMAGE_NAME) -f Dockerfile ../
+	docker build -t $(IMAGE_NAME) -f Dockerfile ../../
 
 .PHONY: push
 push:

docker/server/nginx.conf

@@ -43,6 +43,10 @@ http {
             return 200 '{"status":"OK"}';
         }
 
+        location /.well-known/ {
+            alias /srv/http/public/well-known/;
+        }
+
         location /.well-known/matrix/server {
           default_type application/json;
           add_header "Access-Control-Allow-Origin" *;