update Readme

README.md

@@ -1,5 +1,5 @@
 # biskitbase
-A Docker container with all biskit library requirements as well as third-party programs wrapped by biskit.
+A Docker container with all biskit library requirements as well as third-party programs wrapped by biskit (but not biskit itself).
 
 This container is the base layer used by the full biskit docker image graik/biskit. It contains all the dependencies for biskit and 
 many of the third-party programs for which there exist biskit wrappers. It **does not** contain biskit itself. 
@@ -8,9 +8,20 @@ The project contains an empty folder `downloads`. The docker script will look in
 
 Note: this container is optimized for running the Python 3.x version of Biskit (branch `biskit3` in the github project).
 
-To build run:
+__Setup__
 
-```
+To re-build it locally run (change the `graik/biskitbase` tag as appropriate):
+```sh
+git clone https://github.com/graik/biskitbase.git
+cd biskitbase
 docker build -t graik/biskitbase .
 ```
-
+Then run the image interactively with:
+```sh
+docker run -it graik/biskitbase bash
+```
+Publish it to dockerstore with:
+```sh
+docker login
+docker push graik/biskitbase
+```