diff --git a/tests/cases/docker/office-ui-fabric/Dockerfile b/tests/cases/docker/office-ui-fabric/Dockerfile
index c86d7c7a6bb..d48fba37b65 100644
--- a/tests/cases/docker/office-ui-fabric/Dockerfile
+++ b/tests/cases/docker/office-ui-fabric/Dockerfile
@@ -1,4 +1,5 @@
 FROM node:current
+ENV CI=true
 RUN npm install -g yarn lerna --force
 RUN git clone https://github.com/OfficeDev/office-ui-fabric-react.git /office-ui-fabric-react
 WORKDIR /office-ui-fabric-react