Update README.md

Author: magland

README.md

@@ -1,10 +1,12 @@
 # spikeinterface-dockerfiles
 
-Collection of spike sorters Docker files.
+Docker recipes for various spike sorters, [hosted on dockerhub](https://hub.docker.com/u/spikeinterface).
 
-Theses docker are used in :
+These are base docker images that are used in at least two projects
 
-  * spikeforest
-  * locally with spikeinterface
+  * [spikeforest](https://github.com/flatironinstitute/spikeforest)
+  * [spikeinterface](https://github.com/spikeinterface)
+
+These images are minimalistic in that they contain only what is needed to run the installed sorter (no wrappers included).
 
 See also https://hub.docker.com/u/spikeinterface