diff --git a/BuildServices.asciidoc b/BuildServices.asciidoc
index 54b1d11..953fd25 100644
--- a/BuildServices.asciidoc
+++ b/BuildServices.asciidoc
@@ -1,8 +1,13 @@
-## Building Nim projects on Circle CI
+## Building Nim projects on commercial CI systems
 
-Building your code on Circle CI is useful to check regressions against the master and devel branches of Nim.
+Building your code on CI is useful to check regressions against the master and devel branches of Nim.
 Same for your code documentation.
 
+There are 3 most common ways to install Nim:
+* Pulling the Debian packages: fastest; requires keeping the .deb file URL up to date
+* Using a Docker image: slower but requires little maintenance
+* Using choosenim: slow when compiling Nim from sources
+
 The Nim docker image contains the latest version.
 
 Use this .circleci/config.yml