README.md in pgdexter-0.4.0 vs README.md in pgdexter-0.4.1

- old
+ new

@@ -1,10 +1,10 @@
 # Dexter
 
 The automatic indexer for Postgres
 
-[Read about how it works](https://ankane.org/introducing-dexter)
+[Read about how it works](https://ankane.org/introducing-dexter) or [watch the talk](https://www.youtube.com/watch?v=Mni_1yTaNbE)
 
 [![Build Status](https://github.com/ankane/dexter/workflows/build/badge.svg?branch=master)](https://github.com/ankane/dexter/actions)
 
 ## Installation
 
@@ -210,10 +210,10 @@
 
 ```sh
 docker run -ti ankane/dexter <connection-options>
 ```
 
-On Mac and Windows, use `host.docker.internal` as the database hostname for databases on your local machine.
+For databases on the host machine, use `host.docker.internal` as the hostname (on Linux, this requires Docker 20.04 and `--add-host=host.docker.internal:host-gateway`).
 
 ### Homebrew
 
 With Homebrew, you can use:
 