doc: correct "config-template" example

doc/examples/config-template/README.md

@@ -3,11 +3,6 @@
 configuration:
 
 ```nginx
-map $uri $to_proxy_uri
-{
-    ~^/[^/]+/(.*)$  $1;
-}
-
 {%- for h in (j2cfg.my_caches or []) %}
 proxy_cache_path
     /angie/my-cache/{{ h.name }}
@@ -22,7 +17,7 @@ server {
 
     {%- for h in (j2cfg.my_caches or []) %}
     location /{{ h.name }}/ {
-        proxy_pass {{ h.uri }}/$to_proxy_uri$is_args$args;
+        proxy_pass {{ h.uri }}/;
 
         proxy_cache  {{ h.name }};
 
@@ -91,7 +86,7 @@ server {
 # ...
 
     location /proxy_apt_debian/ {
-        proxy_pass https://deb.debian.org/debian/$to_proxy_uri$is_args$args;
+        proxy_pass https://deb.debian.org/debian/;
 
         proxy_cache  proxy_apt_debian;
 

doc/examples/config-template/conf/image-entry/80-my-caches.envsh

@@ -1,8 +1,7 @@
 #!/bin/sh
 
 unset d
-d="${target_root}/cache/my-cache"
-[ -d "$d" ] || install_userdir "$d"
+d="/angie/my-cache"
 
 unset p
 while read -r p ; do

doc/examples/config-template/conf/site/http-my-cache.conf.j2

@@ -1,8 +1,6 @@
 map $uri
     $to_proxy_uri
 {
-    volatile;
-
     ~^/[^/]+/(.*)$  $1;
 }
 
@@ -68,7 +66,7 @@ server {
 
     {%- for h in (j2cfg.my_caches or []) %}
     location /{{ h.name }}/ {
-        proxy_pass {{ h.uri }}/$to_proxy_uri$is_args$args;
+        proxy_pass {{ h.uri }}/;
 
         proxy_cache  {{ h.name }};