fix(config.yml):CircleCI received exit code 1

I resolved this issue:
error Command failed with exit code 1.

.circleci/config.yml

@@ -69,8 +69,7 @@ jobs:
             - checkout
             - restore_cache:
                 name: Restore Yarn Package Cache
-                keys:
-                    - yarn-packages-v2{{ checksum "yarn.lock" }}
+                keys: yarn-packages-v2{{ checksum "yarn.lock" }}
             - run:
                 name: "E2e Test"
                 command: yarn test:e2e

Dockerfile

@@ -1,5 +0,0 @@
-FROM node:14.10.1
-COPY ["package.json", "yarn.lock", "./"]
-RUN yarn install
-COPY . .
-CMD ["yarn", "start"]