diff --git a/dev/containers/centos7-rpms-py2 b/dev/containers/centos7-rpms-py2
index 40fe373..0f5501e 100644
--- a/dev/containers/centos7-rpms-py2
+++ b/dev/containers/centos7-rpms-py2
@@ -1,7 +1,7 @@
 FROM centos:7
 
-ARG repo
-ARG branch
+ARG repo=https://pagure.io/pagure.git
+ARG branch=master
 
 ENV REPO=$repo
 ENV BRANCH=$branch
diff --git a/dev/containers/f29-rpms-py3 b/dev/containers/f29-rpms-py3
index ec2efd0..5b935c6 100644
--- a/dev/containers/f29-rpms-py3
+++ b/dev/containers/f29-rpms-py3
@@ -1,7 +1,7 @@
 FROM fedora:29
 
-ARG repo
-ARG branch
+ARG repo=https://pagure.io/pagure.git
+ARG branch=master
 
 ENV REPO=$repo
 ENV BRANCH=$branch
diff --git a/dev/containers/fedora-pip-py3 b/dev/containers/fedora-pip-py3
index d50ec7b..5a504ba 100644
--- a/dev/containers/fedora-pip-py3
+++ b/dev/containers/fedora-pip-py3
@@ -1,7 +1,7 @@
 FROM fedora:latest
 
-ARG repo
-ARG branch
+ARG repo=https://pagure.io/pagure.git
+ARG branch=master
 
 ENV REPO=$repo
 ENV BRANCH=$branch