add circleci

.circleci

@@ -0,0 +1,10 @@
+workflows:
+  version: 2
+  jobs:       
+    build:
+      machine: true
+      TAG=0.1.$CIRCLE_BUILD_NUM
+      - run: docker login -u $DOCKER_USER -p $DOCKER_PASS
+      - run: docker build -t ajaytripathy/kubecost-cost-model:latest .
+      - run: docker push ajaytripathy/kubecost-cost-model:$TAG
+