Update readme

README.md

@@ -1,12 +1,11 @@
 # dockcheck
 ### A script checking updates for docker images **without pulling** - then selectively auto-update some/all containers.  
-
-With the help of [`regctl`](https://github.com/regclient/regclient). This is just a concept for inspiration, use with care.
 ___
 
 ## Dependencies:
 Running docker (duh) and compose, either standalone or plugin.   
-`regctl` by [regclient](https://github.com/regclient/regclient) (will ask to download `regctl` if not in `PATH` or `PWD`)
+[`regclient/regctl`](https://github.com/regclient/regclient) (Licensed under [Apache-2.0 License](http://www.apache.org/licenses/LICENSE-2.0))   
+User will be prompted to download `regctl` if not in `PATH` or `PWD`
 ___
 
 
@@ -22,6 +21,7 @@ Options:
 -h     Print this Help.
 -a|y   Automatic updates, without interaction.
 -n     No updates, only checking availability.
+-p     Auto-Prune dangling images after update.
 -r     Allow updating images for docker run, wont update the container.
 ```
 
@@ -34,17 +34,17 @@ glances
 homer
 
 Containers with updates available:
-0) ALL
 1) adguardhome
 2) syncthing
 3) whoogle-search
 
 
 Choose what containers to update:
-Enter number(s) separated by comma, [q] to quit: 1,3
+Enter number(s) separated by comma, [a] for all - [q] to quit:
 
 ```
 Then it proceedes to run `pull` and `up -d` on every container with updates.   
+After the updates are complete, you'll get prompted if you'd like to prune dangling images.
 
 ### `-r flag` :warning: disclaimer and warning:
 **Wont auto-update the containers, only their images. (compose is recommended)**   
@@ -65,6 +65,7 @@ Containers need to be manually stopped, removed and created again to run on the
 - ~~Path broken occationally (from inspect) - probably due to old docker-compose binary.~~
 - ~~Script breaks if one of the chosen containers are a `docker run` container.~~
 - ~~Using relative paths for volumes eg. `${PWD}/data:data` will create the volumes where you stand.~~
+- ~~Having no curl/wget leads to corrupt `regctl` without alerting.~~
 
 ### :hammer: Known issues
 - ~~No granular choice of what to update (except initial name filter).~~
@@ -80,6 +81,9 @@ Updates available for local_nginx.
 nginx_reverse is already latest.
 Updates available for paperless-ng.
 ```
+# License
+dockcheck is created and released under the [GNU GPL v3.0](https://www.gnu.org/licenses/gpl-3.0-standalone.html) license.
+
 ## Also check out a spinoff brother-project [Palleri/dockcheck-web](https://github.com/Palleri/dockcheck-web) for a WebUI-front!
 ---