diff --git a/devtools/containers/README.md b/devtools/containers/README.md
index 92d16768..65cb7716 100644
--- a/devtools/containers/README.md
+++ b/devtools/containers/README.md
@@ -11,3 +11,13 @@ To use them, taking fedora as an example:
 
     docker build -t koji_test_fedora:latest --no-cache ./devtools/containers/fedora
     docker run --rm -v $PWD:/koji --name koji_test koji_test_fedora:latest bash -c "cd /koji && tox -e flake8,py3"
+
+Or CentOS as an example:
+
+    docker build -t koji_test_centos:latest --no-cache ./devtools/containers/centos
+    docker run --rm -v $PWD:/koji --name koji_test koji_test_centos:latest bash -c "cd /koji && tox -e py2"
+
+When running with Podman and SELinux enabled, use the "--security-opt
+label=disable" option:
+
+    podman run --rm -v $PWD:/koji --security-opt label=disable --name koji_test koji_test_fedora:latest bash -c "cd /koji && ls -l /koji && tox -e flake8,py3"