Build image for OpenShift CI master branch

openshift/ci-operator/build-image/Dockerfile

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+# Dockerfile to bootstrap build and test in openshift-ci
+
+FROM openshift/origin-release:golang-1.10
+
+# Add kubernetes repository
+ADD openshift/ci-operator/build-image/kubernetes.repo /etc/yum.repos.d/
+
+RUN yum install -y kubectl ansible
+
+# Allow runtime users to add entries to /etc/passwd
+RUN chmod g+rw /etc/passwd

openshift/ci-operator/build-image/kubernetes.repo

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+[kubernetes]
+name=Kubernetes
+baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
+enabled=1
+gpgcheck=1
+repo_gpgcheck=1
+gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg