ci: Use npm ci for fast(er) installs

.circleci/config.yml

@@ -85,21 +85,14 @@ jobs:
       - image: circleci/node:8.11.3-browsers
     steps:
       - checkout
-      # - restore_cache:
-      #     keys:
-      #       - v{{ .Environment.CACHE_VERSION }}-dependency-cache-{{ checksum "package-lock.json" }}
       - run:
           name: Install npm 6 + deps via npm
           command: |
-           sudo npm install -g npm@6 && npm install --no-save --no-audit
+           sudo npm install -g npm@6 && npm ci
       - persist_to_workspace:
           root: .
           paths:
           - node_modules
-      # - save_cache:
-      #     key: v{{ .Environment.CACHE_VERSION }}-dependency-cache-{{ checksum "package-lock.json" }}
-      #     paths:
-      #       - node_modules
 
   prep-build:
     docker: