diff --git a/README.md b/README.md
index eb4f2ad..3f2a299 100644
--- a/README.md
+++ b/README.md
@@ -4,13 +4,14 @@
 
 This is a shitty Web UI for [ydl_api_ng](https://github.com/Totonyus/ydl_api_ng) — API around [yt-dlp](https://github.com/yt-dlp/yt-dlp).
 
+This UI is written for my personal use and may not have the features you would like to see. I want to gradually expand its capabilities, if there is time for this.
+
 ![](images/1.png)
 ![](images/2.png)
 
-This UI is written for my personal use and may not have the features you would like to see. I want to gradually expand its capabilities, if there is time for this.
-
 # Roadmap
 
+- [] Add Dockerfile and docker-compose.yml
 - [] Handle non-youtube links
 - [] Handle unsupported URLs
 - [] Advanced settings
@@ -55,6 +56,12 @@ pip install -r requirements.txt
 pip install black pylint
 ```
 
+Set `YDL_API_HOST` environment variable. Put your ydl_api_ng instance URL:
+
+```
+export YDL_API_HOST=http://127.0.0.1:5011
+```
+
 Run Bottle development server (starts `router.py` with DEBUG):
 
 ```