diff --git a/Dockerfile b/Dockerfile
index b5b1b24..c8604fe 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -20,7 +20,7 @@ RUN npm install
 
 COPY --from=builder ./app/build ./build
 
-EXPOSE 3010
+EXPOSE 3000
 
 ENV DEBUG="web*,koa*,ndk*"
 
diff --git a/README.md b/README.md
index 94a5aa5..7d3516e 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,60 @@
 # 🌸 blossom-drive-webserver
 
-Serves a blossom-drive as a web page.
-URL: https://sevrername.com/naddr1qvzqq....getnws2yc6ec/
+## Overview
 
+This projects serves (static) web pages from a public blossom drive. Blossom drives are nostr a nostr
+based personal file storage. See it's documentation for more information:
+
+- General Spec: https://github.com/hzrd149/blossom
+- Drive UI: https://github.com/hzrd149/blossom-drive
+- Nostr Event for a Drive: https://github.com/hzrd149/blossom-drive/blob/master/docs/drive.md
+
+Files can be stored via the Drive web UI, which is currently hosted at https://blossom.hzrd149.com/
+
+Each drive is identified by an address pointer, that can be seen in the URL, e.g.: `naddr1qvzqqqrhvvpzpd7x76g4e...amhxgaamr23`
+
+This `naddr` can be used to serve the content of the drive on the web.
+
+## Build
+
+### Local nodejs
+
+```sh
+npm install
+npm run build
+```
+
+```sh
+npm start
+```
+
+### Docker
+
+```sh
+docker build -t blosson-drive-webserver .
+```
+
+```sh
+docker run -it --rm -p 3000:3000 blosson-drive-webserver
+```
+
+```sh
+docker run -p 3000:3000 blosson-drive-webserver
+```
+
+## Configuration
+
+| ENV Variable             | Description                                                                                                                                                                                                                    | Default                                                      |
+| ------------------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------ |
+| PORT                     |  The Port on which the server listens for connections                                                                                                                                                                          | ` 3000`                                                      |
+| DEBUG                    | Sets the debug level / log output for components of the server.                                                                                                                                                                | `web*,koa*,ndk*`                                             |
+| SINGLE_SITE              | A `naddr` pointing to a drive, that will be exclusively served on this server (single site mode). When left blank (default) all drive are available through a folder path e.g. `https://domain.name/naddr1e2w...9aee2sk9el27/` |                                                              |
+| FOLDER_LISTING           | When enabled the web server return a list of folder contents, when no `ìndex.html` file exists.                                                                                                                                |  `true`                                                      |
+| DRIVE_PRELOAD            | When enabled the server preloads a list of all public drive events from NOSTR and stores them im memory cache. This will speed up the first request for a drive.                                                               | `false`                                                      |
+| DRIVE_REFRESH_INTERVAL   | The interval in seconds how often the full lists of drives is fetched from the nostr relays.                                                                                                                                   | `300`                                                        |
+| DRIVE_REFRESH_TIMEOUT    | Timeout for the Nostr Relay Connection in seconds                                                                                                                                                                              | `10`                                                         |
+| DRIVE_CACHE_TTL          | Time in seconds content of the drives are cached for in memory                                                                                                                                                                 | `3600`                                                       |
+| CDN_CACHE_DIR            | Local folder path where blobs are stored                                                                                                                                                                                       | ./cache                                                      |
+| CDN_MAX_LOCAL_CACHE_SIZE | Defines a maximum file size in bytes. Files below this threshold are stored in the local cache folder.                                                                                                                         | `100000`                                                     |
+| CDN_ADDITIONAL_SERVERS   | Comma separated list of blossom blob storage servers that are used in addition to those defined in the drive event (as `r` tags).                                                                                              | `https://cdn.hzrd149.com,` `https://cdn.satellite.earth`     |
+| NOSTR_DEFAULT_RELAYS     | Comma separated list of NOSTR relays that are use in addition to relays defined in the `naddr`.                                                                                                                                | `wss://nostrue.com,` `wss://relay.damus.io,` `wss://nos.lol` |
diff --git a/src/drive.ts b/src/drive.ts
index 2776500..1bc1ac4 100644
--- a/src/drive.ts
+++ b/src/drive.ts
@@ -135,7 +135,10 @@ if (SINGLE_SITE) {
   // Load all drives into the cache
 
   // TODO add lastchange date, to fetch changes
-  // Load all drives into cache and refresh periodically
+  // Load all drives into cache and refresh periodically, 
+  
+  // currently changesare not reflected, when the drive is cached
+  // we need a way to update the cache with the latest changes
 
   fetchAllDrives();
   setInterval(() => fetchAllDrives(), DRIVE_REFRESH_INTERVAL);
diff --git a/src/env.ts b/src/env.ts
index 156c895..37acad0 100644
--- a/src/env.ts
+++ b/src/env.ts
@@ -1,4 +1,4 @@
-export const PORT = process.env.PORT || 3010;
+export const PORT = process.env.PORT || 3000;
 
 export const SINGLE_SITE = process.env.SINGLE_SITE;
 export const FOLDER_LISTING = (process.env.FOLDER_LISTING || 'true') === 'true';
@@ -9,7 +9,7 @@ export const DRIVE_REFRESH_TIMEOUT = parseInt(process.env.DRIVE_REFRESH_TIMEOUT
 export const DRIVE_CACHE_TTL = parseInt(process.env.DRIVE_CACHE_TTL || '3600', 10); // 1h
 
 export const CDN_CACHE_DIR = process.env.CDN_CACHE_DIR || './cache';
-export const CDN_MAX_LOCAL_CACHE_SIZE = parseInt(process.env.CDN_MAX_LOCAL_CACHE_SIZE || '', 100000); // 100KB
+export const CDN_MAX_LOCAL_CACHE_SIZE = parseInt(process.env.CDN_MAX_LOCAL_CACHE_SIZE || '100000', 10); // 100KB
 export const CDN_ADDITIONAL_SERVERS = (
   process.env.CDN_ADDITIONAL_SERVERS || 'https://cdn.hzrd149.com,https://cdn.satellite.earth'
 ).split(',');