diff --git a/.circleci/config.yml b/.circleci/config.yml
new file mode 100644
index 0000000..f2ccae1
--- /dev/null
+++ b/.circleci/config.yml
@@ -0,0 +1,12 @@
+version: "2"
+jobs:
+  build:
+    docker:
+      - image: hashicorp/terraform:light
+    environment:
+      AWS_REGION: us-west-2
+    steps:
+      - checkout
+      - run: terraform init
+      - run: terraform fmt -check=true -diff=true
+      - run: terraform validate -var kops_cluster_name=hello.k8s.local -var kubernetes_ingress_domain=hello.example.com
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1c99dc1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.terraform/
diff --git a/README.md b/README.md
index f6a0767..54b5cbd 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# terraform-aws-kops-alb
+# terraform-aws-kops-alb [![CircleCI](https://circleci.com/gh/int128/terraform-aws-kops-alb.svg?style=shield)](https://circleci.com/gh/int128/terraform-aws-kops-alb)
 
 This is a Terraform module which provides AWS ALB and Route53 for publishing services via nginx-ingress on kops.