diff --git a/.github/workflows/local-docker-environment.yml b/.github/workflows/local-docker-environment.yml
new file mode 100644
index 0000000000000..1e25c82ef1287
--- /dev/null
+++ b/.github/workflows/local-docker-environment.yml
@@ -0,0 +1,154 @@
+name: Local Docker Environment
+
+on:
+  push:
+    branches:
+      - trunk
+      - '6.[8-9]'
+      - '[7-9].[0-9]'
+    paths:
+      # Any changes to Docker related files.
+      - '.env.example'
+      - 'docker-compose.yml'
+      # Any changes to local environment related files
+      - 'tools/local-env/**'
+      # These files manage packages used by the local environment.
+      - 'package*.json'
+      # These files configure Composer. Changes could affect the local environment.
+      - 'composer.*'
+      # These files define the versions to test.
+      - '.version-support-*.json'
+      # Changes to this and related workflow files should always be verified.
+      - '.github/workflows/local-docker-environment.yml'
+      - '.github/workflows/reusable-support-json-reader-v1.yml'
+      - '.github/workflows/reusable-test-docker-environment-v1.yml'
+  pull_request:
+    branches:
+      - trunk
+      - '6.[8-9]'
+      - '[7-9].[0-9]'
+    paths:
+      # Any changes to Docker related files.
+      - '.env.example'
+      - 'docker-compose.yml'
+      # Any changes to local environment related files
+      - 'tools/local-env/**'
+      # These files manage packages used by the local environment.
+      - 'package*.json'
+      # These files configure Composer. Changes could affect the local environment.
+      - 'composer.*'
+      # These files define the versions to test.
+      - '.version-support-*.json'
+      # Changes to this and related workflow files should always be verified.
+      - '.github/workflows/local-docker-environment.yml'
+      - '.github/workflows/reusable-support-json-reader-v1.yml'
+      - '.github/workflows/reusable-test-docker-environment-v1.yml'
+  workflow_dispatch:
+
+# Cancels all previous workflow runs for pull requests that have not completed.
+concurrency:
+  # The concurrency group contains the workflow name and the branch name for pull requests
+  # or the commit hash for any other events.
+  group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref || github.sha }}
+  cancel-in-progress: true
+
+# Disable permissions for all available scopes by default.
+# Any needed permissions should be configured at the job level.
+permissions: {}
+
+jobs:
+  #
+  # Determines the appropriate supported values for PHP and database versions based on the WordPress
+  # version being tested.
+  #
+  build-test-matrix:
+    name: Build Test Matrix
+    uses: WordPress/wordpress-develop/.github/workflows/reusable-support-json-reader-v1.yml@trunk
+    permissions:
+      contents: read
+    secrets: inherit
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
+    with:
+      wp-version: ${{ github.event_name == 'pull_request' && github.base_ref || github.ref_name }}
+
+  # Tests the local Docker environment.
+  environment-tests-mysql:
+    name: PHP ${{ matrix.php }}
+    uses: WordPress/wordpress-develop/.github/workflows/reusable-test-local-docker-environment-v1.yml@trunk
+    permissions:
+      contents: read
+    if: ${{ github.repository == 'WordPress/wordpress-develop' || github.event_name == 'pull_request' }}
+    needs: [ build-test-matrix ]
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ ubuntu-latest ]
+        memcached: [ false, true ]
+        php: ${{ fromJSON( needs.build-test-matrix.outputs.php-versions ) }}
+        db-version: ${{ fromJSON( needs.build-test-matrix.outputs.mysql-versions ) }}
+
+        exclude:
+          # The MySQL 5.5 containers will not start.
+          - db-version: '5.5'
+          # MySQL 9.0+ will not work on PHP 7.2 & 7.3
+          - php: '7.2'
+            db-version: '9.0'
+          - php: '7.3'
+            db-version: '9.0'
+
+    with:
+      os: ${{ matrix.os }}
+      php: ${{ matrix.php }}
+      db-type: 'mysql'
+      db-version: ${{ matrix.db-version }}
+      memcached: ${{ matrix.memcached }}
+      tests-domain: ${{ matrix.tests-domain }}
+
+  slack-notifications:
+    name: Slack Notifications
+    uses: WordPress/wordpress-develop/.github/workflows/slack-notifications.yml@trunk
+    permissions:
+      actions: read
+      contents: read
+    needs: [ build-test-matrix, environment-tests-mysql ]
+    if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name != 'pull_request' && always() }}
+    with:
+      calling_status: ${{ contains( needs.*.result, 'cancelled' ) && 'cancelled' || contains( needs.*.result, 'failure' ) && 'failure' || 'success' }}
+    secrets:
+      SLACK_GHA_SUCCESS_WEBHOOK: ${{ secrets.SLACK_GHA_SUCCESS_WEBHOOK }}
+      SLACK_GHA_CANCELLED_WEBHOOK: ${{ secrets.SLACK_GHA_CANCELLED_WEBHOOK }}
+      SLACK_GHA_FIXED_WEBHOOK: ${{ secrets.SLACK_GHA_FIXED_WEBHOOK }}
+      SLACK_GHA_FAILURE_WEBHOOK: ${{ secrets.SLACK_GHA_FAILURE_WEBHOOK }}
+
+  failed-workflow:
+    name: Failed workflow tasks
+    runs-on: ubuntu-latest
+    permissions:
+      actions: write
+    needs: [ build-test-matrix, environment-tests-mysql, slack-notifications ]
+    if: |
+      always() &&
+      github.repository == 'WordPress/wordpress-develop' &&
+      github.event_name != 'pull_request' &&
+      github.run_attempt < 2 &&
+      (
+        contains( needs.*.result, 'cancelled' ) ||
+        contains( needs.*.result, 'failure' )
+      )
+
+    steps:
+      - name: Dispatch workflow run
+        uses: actions/github-script@60a0d83039c74a4aee543508d2ffcb1c3799cdea # v7.0.1
+        with:
+          retries: 2
+          retry-exempt-status-codes: 418
+          script: |
+            github.rest.actions.createWorkflowDispatch({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              workflow_id: 'failed-workflow.yml',
+              ref: 'trunk',
+              inputs: {
+                run_id: '${{ github.run_id }}'
+              }
+            });
diff --git a/.github/workflows/reusable-test-local-docker-environment-v1.yml b/.github/workflows/reusable-test-local-docker-environment-v1.yml
new file mode 100644
index 0000000000000..4dccd7ef3dccd
--- /dev/null
+++ b/.github/workflows/reusable-test-local-docker-environment-v1.yml
@@ -0,0 +1,160 @@
+##
+# A reusable workflow that ensures the local Docker environment is working properly.
+#
+# This workflow is used by `trunk` and branches >= 6.8.
+##
+name: Test local Docker environment
+
+on:
+  workflow_call:
+    inputs:
+      os:
+        description: 'Operating system to test'
+        required: false
+        type: 'string'
+        default: 'ubuntu-latest'
+      php:
+        description: 'The version of PHP to use, in the format of X.Y'
+        required: false
+        type: 'string'
+        default: 'latest'
+      db-type:
+        description: 'Database type. Valid types are mysql and mariadb'
+        required: false
+        type: 'string'
+        default: 'mysql'
+      db-version:
+        description: 'Database version'
+        required: false
+        type: 'string'
+        default: '8.0'
+      memcached:
+        description: 'Whether to enable memcached'
+        required: false
+        type: 'boolean'
+        default: false
+      tests-domain:
+        description: 'The domain to use for the tests'
+        required: false
+        type: 'string'
+        default: 'example.org'
+
+env:
+  LOCAL_PHP: ${{ inputs.php == 'latest' && 'latest' || format( '{0}-fpm', inputs.php ) }}
+  LOCAL_DB_TYPE: ${{ inputs.db-type }}
+  LOCAL_DB_VERSION: ${{ inputs.db-version }}
+  LOCAL_PHP_MEMCACHED: ${{ inputs.memcached }}
+  LOCAL_WP_TESTS_DOMAIN: ${{ inputs.tests-domain }}
+  PUPPETEER_SKIP_DOWNLOAD: ${{ true }}
+
+jobs:
+  # Tests the local Docker environment.
+  #
+  # Performs the following steps:
+  # - Sets environment variables.
+  # - Checks out the repository.
+  # - Sets up Node.js.
+  # - Sets up PHP.
+  # - Installs Composer dependencies.
+  # - Installs npm dependencies
+  # - Logs general debug information about the runner.
+  # - Logs Docker debug information (about the Docker installation within the runner).
+  # - Starts the WordPress Docker container.
+  # - Logs the running Docker containers.
+  # - Logs debug information about what's installed within the WordPress Docker containers.
+  # - Install WordPress within the Docker container.
+  # - Restarts the Docker environment.
+  # - Runs a WP CLI command.
+  # - Tests the logs command.
+  # - Tests the reset command.
+  # - Ensures version-controlled files are not modified or deleted.
+  local-docker-environment-tests:
+    name: PHP ${{ inputs.php }} / ${{ 'mariadb' == inputs.db-type && 'MariaDB' || 'MySQL' }} ${{ inputs.db-version }}${{ inputs.memcached && ' with memcached' || '' }}${{ 'example.org' != inputs.tests-domain && format( ' {0}', inputs.tests-domain ) || '' }}
+    runs-on: ${{ inputs.os }}
+    timeout-minutes: 20
+
+    steps:
+      - name: Configure environment variables
+        run: |
+          echo "PHP_FPM_UID=$(id -u)" >> $GITHUB_ENV
+          echo "PHP_FPM_GID=$(id -g)" >> $GITHUB_ENV
+
+      - name: Checkout repository
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
+        with:
+          show-progress: ${{ runner.debug == '1' && 'true' || 'false' }}
+
+      - name: Set up Node.js
+        uses: actions/setup-node@1e60f620b9541d16bece96c5465dc8ee9832be0b # v4.0.3
+        with:
+          node-version-file: '.nvmrc'
+          cache: npm
+
+      ##
+      # This allows Composer dependencies to be installed using a single step.
+      #
+      # Since tests are currently run within the Docker containers where the PHP version varies,
+      # the same PHP version needs to be configured for the action runner machine so that the correct
+      # dependency versions are installed and cached.
+      ##
+      - name: Set up PHP
+        uses: shivammathur/setup-php@c541c155eee45413f5b09a52248675b1a2575231 # v2.31.1
+        with:
+          php-version: '${{ inputs.php }}'
+          coverage: none
+
+      # Since Composer dependencies are installed using `composer update` and no lock file is in version control,
+      # passing a custom cache suffix ensures that the cache is flushed at least once per week.
+      - name: Install Composer dependencies
+        uses: ramsey/composer-install@57532f8be5bda426838819c5ee9afb8af389d51a # v3.0.0
+        with:
+          custom-cache-suffix: $(/bin/date -u --date='last Mon' "+%F")
+
+      - name: Install npm dependencies
+        run: npm ci
+
+      - name: General debug information
+        run: |
+          npm --version
+          node --version
+          curl --version
+          git --version
+          composer --version
+          locale -a
+
+      - name: Docker debug information
+        run: |
+          docker -v
+
+      - name: Start Docker environment
+        run: |
+          npm run env:start
+
+      - name: Log running Docker containers
+        run: docker ps -a
+
+      - name: WordPress Docker container debug information
+        run: |
+          docker compose run --rm mysql ${{ env.LOCAL_DB_TYPE }} --version
+          docker compose run --rm php php --version
+          docker compose run --rm php php -m
+          docker compose run --rm php php -i
+          docker compose run --rm php locale -a
+
+      - name: Install WordPress
+        run: npm run env:install
+
+      - name: Restart Docker environment
+        run: npm run env:restart
+
+      - name: Test a CLI command
+        run: npm run env:cli wp option get siteurl
+
+      - name: Test logs command
+        run: npm run env:logs
+
+      - name: Reset the Docker environment
+        run: npm run env:reset
+
+      - name: Ensure version-controlled files are not modified or deleted
+        run: git diff --exit-code