Update Readme

Author: AMEST

README.md

@@ -2,10 +2,17 @@
 
 This application bind and listen local ports and proxy connections to remote docker host with associated docker containers
 
+# Features
+
+Connect to remote docker (wia context or manual `--host` / `env DOCKER_HOST`), getting containers with published tcp ports and proxy requests from localhost to remote docker host.
 
 # Using
 
 1. Install python 3
 2. Install requirements (`pip install -r requirements.txt`)
-3. Set docker host. Example: `export DOCKER_HOST="ssh://user@remote-docker"`
-4. Run: `python main.py`
+3. Set docker host:
+   * Configure via cli: `docker context`
+   * Configure via env variable: `export DOCKER_HOST="ssh://user@remote-docker"`
+   * Run with args `--host "ssh://user@remote-docker"`
+4. If needed listen privileged ports ( < 1024), add arg `--listen-system-ports`
+5. Run: `python src/main.py`