Build multiple node versions on CircleCI

Author: codepunkt

.circleci/config.yml

@@ -1,35 +1,48 @@
-# Javascript Node CircleCI 2.0 configuration file
-#
-# Check https://circleci.com/docs/2.0/language-javascript/ for more details
-#
 version: 2
-jobs:
-  build:
-    docker:
-      # specify the version you desire here
-      - image: circleci/node:7.10
-
-      # Specify service dependencies here if necessary
-      # CircleCI maintains a library of pre-built images
-      # documented at https://circleci.com/docs/2.0/circleci-images/
-      # - image: circleci/mongo:3.4.4
 
+jobs:
+  build-node-common: &build-node-common
     steps:
       - checkout
 
-      # Download and cache dependencies
       - restore_cache:
           keys:
           - dependencies-{{ checksum "package-lock.json" }}
           # fallback to using the latest cache if no exact match is found
           - dependencies-
 
-      - run: npm i
+      - run:
+          name: Install dependencies
+          command: npm i
 
       - save_cache:
+          key: dependencies-{{ checksum "package-lock.json" }}
           paths:
             - node_modules
-          key: dependencies-{{ checksum "package-lock.json" }}
 
-      # run tests!
-      - run: npm run test
+      - run:
+          name: Test
+          command: npm test
+
+  build-node-6:
+    <<: *build-node-common
+    docker:
+      - image: node:6
+
+  build-node-7:
+    <<: *build-node-common
+    docker:
+      - image: node:7
+
+  build-node-8:
+    <<: *build-node-common
+    docker:
+      - image: node:8
+
+workflows:
+  version: 2
+  build_node_versions:
+    jobs:
+      - build-node-6
+      - build-node-7
+      - build-node-8