improved documentation

Dockerfile

@@ -17,4 +17,3 @@ RUN mkdir -p /tmp/f5fpc && \
 
 ADD ./files/opt/* /opt/
 
-CMD /opt/run.sh

Makefile

@@ -1,3 +1,5 @@
 
+.PHONY: default
+
 default:
 	docker build -t matthiaslohr/f5fpc .

README.md

@@ -1,23 +1,57 @@
 
 # F5 VPN client
 
+This Docker image provides the F5 VPN Client, which can be used without local installation.
+The docker image allows two operating modes:
+
+* Using F5 VPN client with local installation like a local installed VPN client.
+* Use the running Docker container as router/gateway to avoid VPN split tunneling.
+  In this mode, the only modification to your local system is a route for your VPN subnets to the running Docker container.
+
+
 ## Setup
 
 * Install Docker. **Important:** Do **not** use the packages provided by your
   distribution packages sources.
   Use the officical resources from docker: https://docs.docker.com/engine/installation/.
-* Install required python packages:
+* If you want to use the gateway mode: Install required python packages:
   ```
   pip install -r requirements.txt
   ```
 
 ### Mac
 
-* For automatic route setup on Mac you need to install ```iproute2mac``` via homebrew.
+* If you want to use the gateway mode:
+  For automatic route setup on Mac you need to install ```iproute2mac``` via homebrew.
 
 
 ## Start F5 VPN client
 
+### VPN client mode
+
+Start the Docker container with the following command:
+```
+docker run --name f5fpc --net host -it --rm --privileged matthiaslohr/f5fpc /bin/bash
+```
+
+Start the VPN client and connect to your VPN server with
+```
+f5fpc -s
+```
+
+Status check:
+```
+f5fpc -i
+```
+
+Disconnect:
+```
+f5fpc -o
+```
+
+
+### Gateway mode
+
 There's a wrapper script (```f5fpy-client.py```) which helps to set up
 the docker container, the VPN connection and the desired network routes.
 
@@ -26,7 +60,7 @@ Simple run:
 ./f5fpc-client.py <VPN_HOST> <USER>
 ```
 
-Connect to a VPN network which uses the 10.0.0.0/8 IP range:
+Auto route setup for connecting to a VPN network which uses the 10.0.0.0/8 IP range (needs root add/remove routes):
 ```
 sudo ./f5fpc-client.py <VPN_HOST> <USER> -n 10.0.0.0/8
 ```
@@ -35,3 +69,4 @@ For more information and options see
 ```
 ./f5fpc-client.py -h
 ```
+