fixes yarn/webpacker config for circleci and deploy

.circleci/config.yml

@@ -25,6 +25,20 @@ jobs:
         key: pomegranate-{{ checksum "Gemfile.lock" }}
         paths:
           - vendor/bundle
+      # Only necessary if app uses webpacker or yarn in some other way
+      - restore_cache:
+          keys:
+            - pomegranate-npm-{{ checksum "package-lock.json" }}
+            - pomegranate-npm-
+      - run:
+          name: NPM install
+          command: npm install
+      # Store yarn / webpacker cache
+      - save_cache:
+          key: pomegranate-npm-{{ checksum "package-lock.json" }}
+          paths:
+            - npm_modules
+      - run: NODE_ENV=test bundle exec rails webpacker:compile
       - persist_to_workspace:
           root: '~/pomegranate'
           paths: '*'

config/deploy.rb

@@ -75,6 +75,17 @@
     end
   end
 end
+
+namespace :deploy do
+  desc 'Run rake yarn install'
+  task :yarn_install do
+    on roles(:web) do
+      within release_path do
+        execute("cd #{release_path} && yarn install")
+      end
+    end
+  end
+end
 after 'deploy:reverted', 'sneakers:restart'
 after 'deploy:published', 'sneakers:restart'
 after 'deploy:starting', 'sidekiq:quiet'