using cirlceci"s docs

.circleci/config.yml

@@ -6,17 +6,22 @@ jobs:
       - image: circleci/node:16
     steps:
       - checkout
-      - run:
-          name: Update NPM
-          command: "sudo npm install -g npm"
       - restore_cache:
-          key: dependency-cache-{{ checksum "package.json" }}
-      - run:
-          name: Update yarn
-          command: sudo npm upgrade -g yarn
+          name: Restore Yarn Package Cache
+          keys:
+            - yarn-packages-{{ checksum "yarn.lock" }}
       - run:
           name: Install Dependencies
-          command: yarn install
+          command: yarn install --immutable
+      - save_cache:
+          name: Save Yarn Package Cache
+          key: yarn-packages-{{ checksum "yarn.lock" }}
+          paths:
+            - .yarn/cache
+            - .yarn/unplugged
+      - run:
+          name: Install npm and yarn
+          command: sudo npm i -g npm yarn
       - run:
           name: Update Dependencies
           command: yarn upgrade