add disclaimer

README.md

@@ -10,6 +10,8 @@ app_port: 3000
 
 This is the frontend interface to VideoChain-API, a server to generate videos using AI.
 
+This space cannot be easily duplicated yet, as you will have to configure a lot of things
+to make it work (you need the API, you need separate spaces for upscaling, interpolation etc)
 ## Getting Started
 
 First, run the development server:
@@ -27,4 +29,12 @@ This project uses [`next/font`](https://nextjs.org/docs/basic-features/font-opti
 ## Things to know
 
 Next will cache the API calls!
-So be careful about this.
+So be careful about this (this is why we invalidate them in the fetch() method)
+
+## Environment variable
+
+```
+NEXT_PUBLIC_BASE_URL=http://localhost:3000
+VC_VIDEOCHAIN_API_URL=http://localhost:7860
+VC_SECRET_ACCESS_TOKEN=***SECRENT***
+```