RSpecテストがローカルでは成功するがcircleCIでエラーになるため解決したい

前提・実現したいこと

投稿アプリを作成しています。ローカルでは問題なくテストが通るのですが、circleCI上ではエラーが発生してしまうため、アドバイスをいただければと思います。

発生している問題・エラーメッセージ

circleCIを実行したところ下記エラーが発生します。

Failure/Error: <%= javascript_pack_tag 'application', 'data-turbolinks-track': 'reload' %>
     
     ActionView::Template::Error:
       Webpacker can't find application.js in /home/circleci/**************/src/public/packs-test/manifest.json. Possible causes:
       1. You want to set webpacker.yml value of compile to true for your environment
          unless you are using the `webpack -w` or the webpack-dev-server.
       2. webpack has not yet re-run to reflect updates.
       3. You have misconfigured Webpacker's config/webpacker.yml file.
       4. Your webpack configuration is not creating a manifest.
       Your manifest contains:
       {
       }

https://qiita.com/k-mashi/items/fdf7c962dbf95e0a55fa　
URLを参考にして.circleci/config.ymlにyarn installを追加しました。

ruby
1      - run:
2          name: yarn install
3          command: yarn install 
4      - run:
5          name: webpack install
6          command: bundle exec bin/webpack

追加したのですが、別のエラーが発生しました。

ruby
1yarn install v1.22.15
2[1/4] Resolving packages...
3[2/4] Fetching packages...
4info fsevents@2.3.2: The platform "linux" is incompatible with this module.
5info "fsevents@2.3.2" is an optional dependency and failed compatibility check. Excluding it from installation.
6info fsevents@1.2.13: The platform "linux" is incompatible with this module.
7info "fsevents@1.2.13" is an optional dependency and failed compatibility check. Excluding it from installation.
8[3/4] Linking dependencies...
9warning " > webpack-dev-server@4.2.1" has unmet peer dependency "webpack@^4.37.0 || ^5.0.0".
10warning "webpack-dev-server > webpack-dev-middleware@5.1.0" has unmet peer dependency "webpack@^4.0.0 || ^5.0.0".
11[4/4] Building fresh packages...
12error /home/circleci/**************/src/node_modules/node-sass: Command failed.
13Exit code: 1
14Command: node scripts/build.js
15Arguments: 
16Directory: /home/circleci/**************/src/node_modules/node-sass
17Output:
18Building: /usr/local/bin/node /home/circleci/**************/src/node_modules/node-gyp/bin/node-gyp.js rebuild --verbose --libsass_ext= --libsass_cflags= --libsass_ldflags= --libsass_library=
19gyp info it worked if it ends with ok
20gyp verb cli [
21gyp verb cli   '/usr/local/bin/node',
22gyp verb cli   '/home/circleci/**************/src/node_modules/node-gyp/bin/node-gyp.js',
23gyp info using node-gyp@3.8.0
24gyp info using node@16.13.0 | linux | x64
25gyp verb command rebuild []
26gyp verb command clean []
27gyp verb clean removing "build" directory
28gyp verb command configure []
29gyp verb check python checking for Python executable "python2" in the PATH
30gyp verb `which` failed Error: not found: python2
31gyp verb `which` failed  python2 Error: not found: python2
32gyp verb `which` failed     at getNotFoundError (/home/circleci/**************/src/node_modules/which/which.js:13:12)
33gyp verb `which` failed     at F (/home/circleci/**************/src/node_modules/which/which.js:68:19)
34gyp verb `which` failed     at E (/home/circleci/**************/src/node_modules/which/which.js:80:29)
35gyp verb `which` failed     at /home/circleci/**************/src/node_modules/which/which.js:89:16
36gyp verb `which` failed     at /home/circleci/**************/src/node_modules/isexe/index.js:42:5
37gyp verb `which` failed     at /home/circleci/**************/src/node_modules/isexe/mode.js:8:5
38gyp verb `which` failed     at FSReqCallback.oncomplete (node:fs:198:21) {
39gyp verb `which` failed   code: 'ENOENT'
40gyp verb `which` failed }
41gyp verb check python checking for Python executable "python" in the PATH
42gyp verb `which` failed Error: not found: python
43gyp verb `which` failed     at getNotFoundError (/home/circleci/**************/src/node_modules/which/which.js:13:12)
44gyp verb `which` failed     at F (/home/circleci/**************/src/node_modules/which/which.js:68:19)
45gyp verb `which` failed     at E (/home/circleci/**************/src/node_modules/which/which.js:80:29)
46gyp verb `which` failed     at /home/circleci/**************/src/node_modules/which/which.js:89:16
47gyp verb `which` failed     at /home/circleci/**************/src/node_modules/isexe/index.js:42:5
48gyp verb `which` failed     at /home/circleci/**************/src/node_modules/isexe/mode.js:8:5
49gyp verb `which` failed     at FSReqCallback.oncomplete (node:fs:198:21)
50gyp verb `which` failed  python Error: not found: python
51gyp verb `which` failed     at getNotFoundError (/home/circleci/**************/src/node_modules/which/which.js:13:12)
52gyp verb `which` failed     at F (/home/circleci/**************/src/node_modules/which/which.js:68:19)
53gyp verb `which` failed     at E (/home/circleci/**************/src/node_modules/which/which.js:80:29)
54gyp verb `which` failed     at /home/circleci/**************/src/node_modules/which/which.js:89:16
55gyp verb `which` failed     at /home/circleci/**************/src/node_modules/isexe/index.js:42:5
56gyp verb `which` failed     at /home/circleci/**************/src/node_modules/isexe/mode.js:8:5
57gyp verb `which` failed     at FSReqCallback.oncomplete (node:fs:198:21) {
58gyp verb `which` failed   code: 'ENOENT'
59gyp verb `which` failed }
60gyp ERR! configure error 
61gyp ERR! stack Error: Can't find Python executable "python", you can set the PYTHON env variable.
62gyp ERR! System Linux 4.15.0-1115-aws
63gyp ERR! command "/usr/local/bin/node" "/home/circleci/**************/src/node_modules/node-gyp/bin/node-gyp.js" "rebuild" "--verbose" "--libsass_ext=" "--libsass_cflags=" "--libsass_ldflags=" "--libsass_library="
64gyp ERR! cwd /home/circleci/**************/src/node_modules/node-sass
65gyp ERR! node -v v16.13.0
66gyp ERR! node-gyp -v v3.8.0
67gyp ERR! not ok 
68Build failed with error code: 1
69info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

エラーコードからnode.jsとnode-sassのバージョンの互換性を疑いnodeのバージョンを確認しました。次に、dockerのコンテナ内でnode --version を実行し、v12.22.5を確認。
"node-sass": "^6.0.1"だったので、yarn why node-sassを実行し、で対応しているバージョンを特定しました。

yarn why v1.22.15
[4/4] Calculating file sizes...
=> Found "node-sass@4.14.1"
info Reasons this module exists
   - "@rails#webpacker" depends on it
   - Hoisted from "@rails#webpacker#node-sass"
info Disk size without dependencies: "6.32MB"
info Disk size with unique dependencies: "14.7MB"
info Disk size with transitive dependencies: "27.14MB"
info Number of shared dependencies: 74

yarn upgrade node-sass@4.14.1を実行し、ダウングレードしたのですがエラーに変化なく行き詰まっています。

該当のソースコード

ruby
1.circleci/config.yml
2
3version: 2.1
4orbs:
5  ruby: circleci/ruby@1.1.2
6  heroku: circleci/heroku@1.2.3
7
8jobs:
9  build:
10    docker:
11      - image: circleci/ruby:2.7-node
12    working_directory: ~/portfolio/src
13    steps:
14      - checkout:
15          path: ~/portfolio
16      - ruby/install-deps
17      - run:
18          name: yarn install
19          command: yarn install
20      - run:
21          name: webpack install
22          command: bundle exec bin/webpack
23
24  rubocop:
25    working_directory: ~/portfolio/src
26    docker:
27      - image: circleci/ruby:2.7-node
28    steps:
29      - checkout:
30          path: ~/portfolio-fuji
31      - ruby/install-deps
32      - restore_cache:
33          keys:
34            - v1-dependencies-{{ checksum "Gemfile.lock" }}
35            - v1-dependencies-
36      - run: bundle install
37      - save_cache:
38          paths:
39            - ./vendor/bundle
40          key: v1-dependencies-{{ checksum "Gemfile.lock" }}
41      - run:
42          name: Rubocop
43          command: bundle exec rubocop
44
45  rspec:
46    docker:
47      - image: circleci/ruby:2.7-node
48      - image: circleci/mysql:5.5
49        environment:
50          MYSQL_ROOT_PASSWORD: password
51          MYSQL_DATABASE: app_test
52          MYSQL_USER: root
53    environment:
54      BUNDLE_JOBS: "3"
55      BUNDLE_RETRY: "3"
56      APP_DATABASE_HOST: "127.0.0.1"
57      RAILS_ENV: test
58      NODE_ENV: test
59    working_directory: ~/portfolio-fuji/src
60    steps:
61      - checkout:
62          path: ~/portfolio
63      - ruby/install-deps
64      - run:
65          name: Database setup
66          command: bundle exec rails db:migrate
67      - run:
68          name: Run rspec
69          command: bundle exec rspec
70
71  deploy:
72    docker:
73      - image: circleci/ruby:2.7-node
74    steps:
75      - checkout
76      - setup_remote_docker:
77          version: 19.03.13
78      - heroku/install
79      - run:
80          name: heroku login
81          command: heroku container:login
82      - run:
83          name: push docker image
84          command: heroku container:push web -a $HEROKU_APP_NAME
85      - run:
86          name: release docker image
87          command: heroku container:release web -a $HEROKU_APP_NAME
88      - run:
89          name: database setup
90          command: heroku run bundle exec rake db:migrate RAILS_ENV=production -a $HEROKU_APP_NAME
91
92workflows:
93  version: 2
94  build_rubocop_rspec_and_deploy:
95    jobs:
96      - build
97      - rspec
98      - rubocop
99      - deploy:
100          requires:
101            - build
102            - rspec
103            - rubocop
104          filters:
105            branches:
106              only: main
107

ruby
1Dockerfile
2
3FROM ruby:2.7
4
5ENV RAILS_ENV=production
6
7RUN curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add - \ 
8  && echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list \ 
9  && apt-get update -qq \ 
10  && apt-get install -y nodejs yarn mariadb-client 
11WORKDIR /app
12COPY ./src /app
13RUN bundle config --local set path 'vendor/bundle' \
14  && bundle install
15
16COPY start.sh /start.sh
17RUN chmod 744 /start.sh
18CMD ["sh", "/start.sh"]
19