Update circleci config

.circleci/config.yml

@@ -1,35 +1,82 @@
 version: 2
 
-jobs:
-  test:
-    working_directory: ~/gatsby-starter-lumen
+defaults: &defaults
   docker:
     - image: circleci/node:8.9.1
+  working_directory: ~/gatsby-starter-lumen
+
+jobs:
+  install:
+    <<: *defaults
     steps:
       - checkout
       - restore_cache:
           keys:
             - dependencies-{{ checksum "yarn.lock" }}
-            # fallback to using the latest cache if no exact match is found
-            - dependencies-
-      - run:
-          name: Install and build package
-          command: yarn install --frozen-lockfile
-      - run: 
-          name: "Lint"
-          command: yarn lint:all
-      - run:
-          name: Coverage
-          command: yarn test:coverage --runInBand --no-cache
-      - run:
-          name: Unit tests
-          command: yarn test --runInBand --no-cache
+      - run: yarn install --frozen-lockfile
       - save_cache:
           paths:
             - node_modules
           key: dependencies-{{ checksum "yarn.lock" }}
+
+  lint:
+    <<: *defaults
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - dependencies-{{ checksum "yarn.lock" }}
+      - run: yarn lint
+
+  test:
+    <<: *defaults
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - dependencies-{{ checksum "yarn.lock" }}
+      - run: yarn test --runInBand --no-cache
+
+  coverage:
+    <<: *defaults
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - dependencies-{{ checksum "yarn.lock" }}
+      - run: yarn test:coverage --runInBand --no-cache
+      - save_cache:
+          key: coverage-{{ .Environment.CIRCLE_SHA1 }}
+          paths:
+            - coverage
+
+  codecov:
+    <<: *defaults
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - dependencies-{{ checksum "yarn.lock" }}
+      - restore_cache:
+          keys:
+            - coverage-output-{{ .Environment.CIRCLE_SHA1 }}
+      - run: yarn global add codecov
+      - run: yarn codecov
+    
 workflows:
   version: 2
   build_test:
     jobs:
-      - test
+      - install
+      - lint:
+          requires:
+            - install
+      - test:
+          requires:
+            - install
+      - coverage:
+          requires:
+            - install
+      - codecov:
+          requires:
+            - coverage