diff --git a/.tugboat/config.yml b/.tugboat/config.yml
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--- /dev/null
+++ b/.tugboat/config.yml
@@ -0,0 +1,38 @@
+# https://docs.tugboatqa.com/reference/tugboat-configuration/
+# https://docs.tugboatqa.com/starter-configs/tutorials/drupal-10/
+services:
+  webserver:
+    image: tugboatqa/php:8.3-apache
+    default: true
+    commands:
+      init:
+        - docker-php-ext-install opcache
+        - a2enmod headers rewrite
+        - echo "memory_limit = -1" >> /usr/local/etc/php/conf.d/my-php.ini
+        - ln -snf "${TUGBOAT_ROOT}/web" "${DOCROOT}"
+      build:
+        - composer install
+        - composer run drupal:install
+
+        # Make sure files and translations folders exist and are writable.
+        - mkdir -p "${DOCROOT}/sites/default/files/translations"
+        - chgrp -R www-data "${DOCROOT}/sites/default/files"
+        - find "${DOCROOT}/sites/default/files" -type d -exec chmod 2775 {} \;
+        - find "${DOCROOT}/sites/default/files" -type f -exec chmod 0664 {} \;
+
+        # Enable verbose error logging (debug mode).
+        - ./vendor/bin/drush config:set --yes system.logging error_level verbose
+        - ./vendor/bin/drush config:get system.logging error_level
+
+        # @todo The above Drush command doesn't ultimately take effect
+        #   for some reason. Manually change the settings until it can
+        #   be debugged.
+        - |
+          echo "if (file_exists(__DIR__ . '/settings.local.php')) {
+            include __DIR__ . '/settings.local.php';
+          }" | sudo tee -a web/sites/default/settings.php
+          sudo cp web/sites/example.settings.local.php \
+            web/sites/default/settings.local.php
+
+        # Make everything writable.
+        - sudo chmod -R 777 "${DOCROOT}"