Publish Helm chart from CircleCI

.circleci/config.yml

@@ -144,6 +144,47 @@ jobs:
       - run: test/e2e-linkerd.sh
       - run: test/e2e-linkerd-tests.sh
 
+  push-helm-charts:
+    docker:
+      - image: circleci/golang:1.12
+    steps:
+      - checkout
+      - run:
+          name: Install kubectl
+          command: sudo curl -L https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl -o /usr/local/bin/kubectl && sudo chmod +x /usr/local/bin/kubectl
+      - run:
+          name: Install helm
+          command: sudo curl -L https://storage.googleapis.com/kubernetes-helm/helm-v2.14.2-linux-amd64.tar.gz | tar xz && sudo mv linux-amd64/helm /bin/helm && sudo rm -rf linux-amd64
+      - run:
+          name: Initialize helm
+          command:  helm init --client-only --kubeconfig=$HOME/.kube/kubeconfig
+      - run:
+          name: Lint charts
+          command: |
+            helm lint ./charts/*
+      - run:
+          name: Package charts
+          command: |
+            mkdir $HOME/charts
+            helm package ./charts/* --destination $HOME/charts
+      - run:
+          name: Publish charts
+          command: |
+            if echo "${CIRCLE_TAG}" | grep -Eq "[0-9]+(\.[0-9]+)*(-[a-z]+)?$"; then
+              REPOSITORY="https://weaveworksbot:${GITHUB_TOKEN}@github.com/weaveworks/flagger.git"
+              git config user.email weaveworksbot@users.noreply.github.com
+              git config user.name weaveworksbot
+              git remote set-url origin ${REPOSITORY}
+              git checkout gh-pages
+              mv -f $HOME/charts/*.tgz .
+              helm repo index . --url https://flagger.app
+              git add .
+              git commit -m "Publish Helm charts v${CIRCLE_TAG}"
+              git push origin gh-pages
+            else
+              echo "Not a release! Skip charts publish"
+            fi
+
 workflows:
   version: 2
   build-test-push:
@@ -198,6 +239,14 @@ workflows:
             tags:
               ignore: /^chart.*/
       - push-binary:
+          requires:
+            - push-container
+          filters:
+            branches:
+              ignore: /.*/
+            tags:
+              ignore: /^chart.*/
+      - push-helm-charts:
           requires:
             - push-container
           filters: