diff --git a/README.md b/README.md
index 7120e55..1a3ba9f 100644
--- a/README.md
+++ b/README.md
@@ -27,23 +27,6 @@ The IFM uses the following resources:
 ## installation
 Just copy the ifm.php to your webspace - thats all :)
 
-## docker
-
-The docker image is based on alpine 3.5 for a small image footprint, with necessary apache, php and supporting packages installed and exposes port 80.
-
-### build image
-
-Run the following command from the top source dir:
-
-`docker build -t ifm .`
-
-### run image
-
-The script is installed inside the image at `/var/www/html/index.php`. Its default configuration is unchanged, thus it will display the contents of the document root (`/var/www/html`).  
-
-Here is an example of how to start up a container with this image:
-`docker run --rm -i -p "9090:80" -v "/data:/var/www/html/data" ifm`
-
 ## key bindings
 * <kbd>e</kbd> - edit / extract current file
 * <kbd>h</kbd><kbd>j</kbd><kbd>k</kbd><kbd>l</kbd> - vim-style navigation (alternative to arrow keys)
@@ -76,6 +59,56 @@ The file should contain ONLY ONE LINE:
 ```
 The password hash has to be a hash generated by PHPs `password_hash()` function. The default credentials are "admin:admin". 
 
+## docker
+
+The docker image is based on alpine 3.5 for a small image footprint, with necessary apache, php and supporting packages installed and exposes port 80
+
+### build image
+
+Run the following command from the top source dir:
+
+`docker build -t ifm .`
+
+### run image
+
+The script is installed inside the image at `/var/www/html/index.php`. Its default configuration is unchanged, thus it will display the contents of the document root (`/var/www/html`)
+
+Here is an example of how to start up a container with this image:
+
+`docker run --rm -it -e IFM_AUTH=1 -p "9090:80" -v "/data:/var/www/html/data" ifm`
+
+The script's configuration can be changed by adjusting the corresponding docker environment variables 
+listed below:
+
+| PHP config value   | Docker env var             |
+| ------------------ | -------------------------- |
+| `auth`             | `IFM_AUTH`                 |
+| `auth_source`      | `IFM_AUTH_SOURCE`          |
+| `root_dir`         | `IFM_ROOT_DIR`             |
+| `tmp_dir`          | `IFM_TMP_DIR`              |
+| `defaulttimezone`  | `IFM_DEFAULTTIMEZONE`      |
+| `ajaxrequest`      | `IFM_API_AJAXREQUEST`      |
+| `chmod`            | `IFM_API_CHMOD`            |
+| `copymove`         | `IFM_API_COPYMOVE`         |
+| `createdir`        | `IFM_API_CREATEDIR`        |
+| `createfile`       | `IFM_API_CREATEFILE`       |
+| `edit`             | `IFM_API_EDIT`             |
+| `delete`           | `IFM_API_DELETE`           |
+| `download`         | `IFM_API_DOWNLOAD`         |
+| `extract`          | `IFM_API_EXTRACT`          |
+| `upload`           | `IFM_API_UPLOAD`           |
+| `remoteupload`     | `IFM_API_REMOTEUPLOAD`     |
+| `rename`           | `IFM_API_RENAME`           |
+| `zipnload`         | `IFM_API_ZIPNLOAD`         |
+| `showlastmodified` | `IFM_GUI_SHOWLASTMODIFIED` |
+| `showfilesize`     | `IFM_GUI_SHOWFILESIZE`     |
+| `showowner`        | `IFM_GUI_SHOWOWNER`        |
+| `showgroup`        | `IFM_GUI_SHOWGROUP`        |
+| `showpermissions`  | `IFM_GUI_SHOWPERMISSIONS`  |
+| `showhtdocs`       | `IFM_GUI_SHOWHTDOCS`       |
+| `showhiddenfiles`  | `IFM_GUI_SHOWHIDDENFILES`  |
+| `showpath`         | `IFM_GUI_SHOWPATH`         |
+
 ## screenshots
 <a href="https://misterunknown.de/static/ifm_screenshot_desktop_filelist.png"><img src="https://misterunknown.de/static/ifm_screenshot_desktop_filelist.png" height="300px"></a>
 <a href="https://misterunknown.de/static/ifm_screenshot_mobile_filelist.png"><img src="https://misterunknown.de/static/ifm_screenshot_mobile_filelist.png" height="300px"></a>