Use mkdocs snippets to template common content blocks (#135)

manuscript/recipes/miniflux.md

@@ -71,8 +71,7 @@ The entire application is configured using environment variables, including the
 
 Create a docker swarm config file in docker-compose syntax (v3), something like this:
 
-!!! tip
-        I share (_with my [sponsors](https://github.com/sponsors/funkypenguin)_) a private "_premix_" git repository, which includes necessary docker-compose and env files for all published recipes. This means that sponsors can launch any recipe with just a ```git pull``` and a ```docker stack deploy``` 👍
+--8<-- "premix-cta.md"
 
 ```
 version: '3'
@@ -139,6 +138,6 @@ Launch the Miniflux stack by running ```docker stack deploy miniflux -c <path -t
 
 Log into your new instance at https://**YOUR-FQDN**, using the credentials you setup in the environment flie. After this, change your user/password as you see fit, and comment out the ```CREATE_ADMIN``` line in the env file (_if you don't, then an **additional** admin will be created the next time you deploy_)
 
-## Chef's Notes 📓
+[^1]: Find the bookmarklet under the **Settings -> Integration** page.
 
-1. Find the bookmarklet under the **Settings -> Integration** page.
+--8<-- "recipe-footer.md"