Update README.md

README.md

@@ -29,6 +29,7 @@ This repository dockerizes it for easier deployment.
 - 100% generic
 - Everything is customizable
 - Zero special host dependencies
+- Configuration is not compile-time
 - "It just works"
 
 ## Alternatives
@@ -77,6 +78,11 @@ a good experience for both you and your users. It thus supports multiple
 
 This guide will explain some of the tricky `.env` file parts as detailed as possible (but you should still read the comments in there).
 
+Since this setup [injects code](https://glitch.sh/sn0w/pleroma-docker/blob/master/docker-config.exs) into pleroma that moves it's configuration into the environment (ref ["The Twelve-Factor App"](https://12factor.net/)),
+the built image is 100% reusable and can be shared/replicated across multiple hosts.
+To do that just run `./pleroma build` as usual and then tag your image to whatever you want.
+Just make sure to start the replicated container with `env_file:` or all required `-e` pairs.
+
 #### Storing Data
 
 Currently all data is stored in subfolders of `DOCKER_DATADIR` which will be bind-mounted into the container by docker.