Better build explanations

BUILD.rst

+Build or-tools
+==============
+
 In order to build this docker you'll need to build
 Google' or-tools and third parties.
 
@@ -1,4 +4,6 @@
 In order to build this docker you'll need to build
 Google' or-tools and third parties.
 
+Repackage
+=========
 Once this is done you'll need to repackage it using the
@@ -4,3 +9,9 @@
 Once this is done you'll need to repackage it using the
-provided scripts.
+provided scripts::
+
+  cd tools
+  ./repackage.sh
+
+Once you have a repackaged or-tools it will be places into
+the source tree for this Docker.
 
@@ -6,3 +17,16 @@
 
-Once you gave a repackaged or-tools you'll be able to place it
-under the source tree for this Docker and finally build the docker.
+Build
+=====
+
+Build the docker itself::
+  
+  ./build.sh
+
+Test
+====
+
+Run the docker and run the provided test::
+
+  docker run -ti xcgd/pytsp /bin/bash
+  cd /opt/sources
+  python test.py