diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
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+++ b/.github/workflows/ci.yaml
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+---
+
+# run setting up dotfiles using ansible in a CI server.
+# This is to check if the dotfiles are being setup properly without issues.
+#
+# Obtained from https://github.com/geerlingguy/mac-dev-playbook/blob/master/.github/workflows/ci.yml
+
+name: CI
+'on':
+  pull_request:
+  push:
+    branches:
+      - master
+  schedule:
+    - cron: "0 5 * * 4"
+
+env:
+  FORCE_COLOR: true     # display terminal colors
+
+jobs:
+
+  # lint:
+  #   name: Lint
+  #   runs-on: ubuntu-latest
+  #   steps:
+  #     - name: Check out the codebase.
+  #       uses: actions/checkout@v4
+  #
+  #     - name: Set up Python 3.
+  #       uses: actions/setup-python@v5
+  #       with:
+  #         python-version: '3.x'
+  #
+  #     - name: Install test dependencies.
+  #       run: pip3 install yamllint ansible ansible-lint
+  #
+  #     - name: Lint code using yamllint
+  #       run: yamllint -c .yamllint .
+  #
+  #     - name: Lint ansible code using ansible-lint
+  #       run: ansible-lint -c .ansible-lint .
+
+  integration:
+    name: Integration
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        include:
+          # - os: macos-latest
+          #   runCommand: "./dotfiles macos"
+          #   playbook: macos
+          # - os: macos-12
+          #   runCommand: "./dotfiles macos"
+          #   playbook: macos
+          # - os: ubuntu-latest
+          #   runCommand: "./dotfiles wsl-ubuntu"
+          #   playbook: wsl-ubuntu
+          - os: ubuntu-22.04
+            runCommand: "./dotfiles wsl-ubuntu"
+            playbook: wsl-ubuntu
+
+    steps:
+      - name: Check out the codebase.
+        uses: actions/checkout@v4
+
+      - name: Uninstall GitHub Actions' built-in Homebrew.
+        if: startsWith(matrix.os, 'macos')
+        run: |
+          # Download and run the uninstall script.
+          curl -sLO https://raw.githubusercontent.com/Homebrew/install/master/uninstall.sh ;
+          chmod +x ./uninstall.sh ;
+          sudo ./uninstall.sh --force ;
+          # Clean up Homebrew directories.
+          sudo rm -rf /usr/local/Homebrew ;
+          sudo rm -rf /usr/local/Caskroom ;
+          sudo rm -rf /usr/local/bin/brew ;
+
+      - name: Uninstall GitHub Actions' built-in browser installs.
+        if: startsWith(matrix.os, 'macos')
+        run: |
+          sudo rm -rf /Applications/Firefox.app
+          sudo rm -rf /Applications/Google\ Chrome.app
+          sudo rm -rf /usr/local/bin/firefox
+
+      - name: Setup locales
+        if: startsWith(matrix.os, 'ubuntu')
+        run: |
+          export LANG=en_CA.UTF-8
+          export LC_ALL=en_CA.UTF-8
+          sudo locale-gen "en_CA.UTF-8"
+          sudo dpkg-reconfigure locales
+
+      - name: Install ansible
+        run: |
+          source tools/zsh/.zshenv ;
+          source tools/zsh/exports.zsh ;
+          sudo pip3 install --upgrade pip ;
+          sudo pip3 install ansible ;
+
+      - name: Set up the test environment.
+        run: |
+          source tools/zsh/.zshenv ;
+          source tools/zsh/exports.zsh ;
+          ansible-galaxy install -r requirements.yaml
+      #     cp tests/ansible.cfg ./ansible.cfg
+      #     cp tests/inventory ./inventory
+      #     cp tests/config.yml ./config.yml
+
+      - name: view ansible basic info
+        run: |
+          source tools/zsh/.zshenv ;
+          source tools/zsh/exports.zsh ;
+          ansible --version
+
+      - name: print env
+        run: |
+          source tools/zsh/.zshenv ;
+          source tools/zsh/exports.zsh ;
+          env
+
+      - name: print directory
+        run: |
+          pwd
+          ls -lah
+
+      - name: echo ANSIBLE_HOME
+        run: |
+          source tools/zsh/.zshenv ;
+          source tools/zsh/exports.zsh ;
+          echo "$ANSIBLE_HOME"
+
+      - name: where ansible
+        run: |
+          source tools/zsh/.zshenv ;
+          source tools/zsh/exports.zsh ;
+          which ansible
+
+      # - name: Check the playbook's syntax.
+      #   run: ANSIBLE_CONFIG=./ansible.cfg ansible-playbook playbooks/${{ matrix.playbook }}.yaml --syntax-check
+
+      - name: Test the playbook.
+        # run: ./dotfiles ${{ matrix.playbook }}
+        run: |
+          source tools/zsh/.zshenv ;
+          source tools/zsh/exports.zsh ;
+          ANSIBLE_CONFIG=./ansible.cfg ansible-playbook playbooks/${{ matrix.playbook }}.yaml
+        env:
+          ANSIBLE_FORCE_COLOR: '1'
+
+      # - name: Idempotence check.
+      #   run: |
+      #     idempotence=$(mktemp)
+      #     ansible-playbook main.yml | tee -a ${idempotence}
+      #     tail ${idempotence} | grep -q 'changed=0.*failed=0' && (echo 'Idempotence test: pass' && exit 0) || (echo 'Idempotence test: fail' && exit 1)
+      #   env:
+      #     ANSIBLE_FORCE_COLOR: '1'