diff --git a/tests/docker/centos7-autotools/Dockerfile b/tests/docker/centos7-autotools/Dockerfile
index a97db9dc52129da5d753790ad23a5d066926649f..e1c7888c4ddb3069acd68f05c9e40621fa2914bd 100644
--- a/tests/docker/centos7-autotools/Dockerfile
+++ b/tests/docker/centos7-autotools/Dockerfile
@@ -4,10 +4,17 @@
 # docker push registry.freedesktop.org/libnice/libnice/centos7/autotools-build:$(date --rfc-3339=date)
 # docker push registry.freedesktop.org/libnice/libnice/centos7/autotools-build:latest
 
+# alternatively
+
+# buildah bud -t registry.freedesktop.org/libnice/libnice/centos7/autotools-build:$(date --rfc-3339=date) .
+# buildah tag registry.freedesktop.org/libnice/libnice/centos7/autotools-build:$(date --rfc-3339=date) registry.freedesktop.org/libnice/libnice/centos7/autotools-build:latest
+# buildah push registry.freedesktop.org/libnice/libnice/centos7/autotools-build:latest
+# buildah push registry.freedesktop.org/libnice/libnice/centos7/autotools-build:$(date --rfc-3339=date)
+
 FROM centos:centos7
 
 RUN yum -y update; yum clean all
-RUN yum -y install git gtk-doc gnutls-devel gupnp-igd-devel gstreamer1-devel gobject-introspection-devel; yum clean all
+RUN yum -y install git gtk-doc gnutls-devel gupnp-igd-devel gstreamer1-devel gobject-introspection-devel valgrind; yum clean all
 
 RUN yum -y install autoconf automake libtool; yum clean all
 RUN yum -y install net-tools; yum clean all
diff --git a/tests/docker/centos7-meson/Dockerfile b/tests/docker/centos7-meson/Dockerfile
index f7fa1e1df7b2a09f792db617919b6b7729f6bace..f5635f62e287fac003d73c44ccd62ca68430228d 100644
--- a/tests/docker/centos7-meson/Dockerfile
+++ b/tests/docker/centos7-meson/Dockerfile
@@ -4,10 +4,17 @@
 # docker push registry.freedesktop.org/libnice/libnice/centos7/meson-build:latest
 # docker push registry.freedesktop.org/libnice/libnice/centos7/meson-build:$(date --rfc-3339=date)
 
+# alternatively
+
+# buildah bud -t registry.freedesktop.org/libnice/libnice/centos7/meson-build:$(date --rfc-3339=date) .
+# buildah tag registry.freedesktop.org/libnice/libnice/centos7/meson-build:$(date --rfc-3339=date) registry.freedesktop.org/libnice/libnice/centos7/meson-build:latest
+# buildah push registry.freedesktop.org/libnice/libnice/centos7/meson-build:latest
+# buildah push registry.freedesktop.org/libnice/libnice/centos7/meson-build:$(date --rfc-3339=date)
+
 FROM centos:centos7
 
 RUN yum -y update; yum clean all
-RUN yum -y install git gtk-doc gnutls-devel gupnp-igd-devel gstreamer1-devel gobject-introspection-devel; yum clean all
+RUN yum -y install git gtk-doc gnutls-devel gupnp-igd-devel gstreamer1-devel gobject-introspection-devel valgrind; yum clean all
 RUN yum -y install net-tools; yum clean all