Add note on Docker Hub

docs/recipes/apache.md

@@ -4,6 +4,8 @@ keywords: registry, on-prem, images, tags, repository, distribution, authenticat
 title: Authenticate proxy with apache
 ---
 
+{% include registry.md %}
+
 ## Use-case
 
 People already relying on an apache proxy to authenticate their users to other services might want to leverage it and have Registry communications tunneled through the same pipeline.

docs/recipes/index.md

@@ -4,6 +4,8 @@ keywords: registry, on-prem, images, tags, repository, distribution, recipes, ad
 title: Recipes overview
 ---
 
+{% include registry.md %}
+
 This list of "recipes" provides end-to-end scenarios for exotic or otherwise advanced use-cases.
 These recipes are not useful for most standard set-ups.
 

docs/recipes/mirror.md

@@ -6,6 +6,8 @@ redirect_from:
 - /engine/admin/registry_mirror/
 ---
 
+{% include registry.md %}
+
 ## Use-case
 
 If you have multiple instances of Docker running in your environment, such as

docs/recipes/nginx.md

@@ -6,6 +6,8 @@ redirect_from:
 - /registry/nginx/
 ---
 
+{% include registry.md %}
+
 ## Use-case
 
 People already relying on a nginx proxy to authenticate their users to other

docs/recipes/osx-setup-guide.md

@@ -4,6 +4,8 @@ keywords: registry, on-prem, images, tags, repository, distribution, macOS, reci
 title: macOS setup guide
 ---
 
+{% include registry.md %}
+
 ## Use-case
 
 This is useful if you intend to run a registry server natively on macOS.