tests: document selecting a target distribution.

6 years ago · 6390e36a4e
parent 15e30e8ac5
commit 6390e36a4e
1 changed files with 7 additions and 0 deletions
--- a/tests/README.md
+++ b/tests/README.md
@ -30,6 +30,13 @@ and run the tests there.
 1. Run ``test``


+# Selecting a target distribution
+
+Docker target images exist for testing against CentOS and Debian, with the
+default being Debian. To select CentOS, specify `MITOGEN_TEST_DISTRO=centos` in
+the environment.
+
+
 # User Accounts

 A set of standard user account names are used by in the Docker container and