set WP_DEBUG_LOG instead of WP_DEBUG so deprecation warnings do not break your site

values.yaml

@@ -150,7 +150,7 @@ wordpress:
   mu_plugins_enabled: false
   mu_plugins_dir: mu-plugins
   # See values-local.yaml.example for an example value
-  mu_plugins: {}
+  mu_plugins: []
 
   ## Enable externally triggered cron with a cron plugin
   # NOTE: mu_cron is disabled by default. Set `wordpress.mu_cron.enabled` to

wp-cli-docker/roles/wordpress-init/tasks/main.yml

@@ -171,7 +171,7 @@
 
 # Enables or disables WordPress' debug mode
 - name: Set debug mode
-  shell: wp {{ cli_args }} config set WP_DEBUG  {{ WP_DEBUG }} --raw --type=constant
+  shell: wp {{ cli_args }} config set WP_DEBUG_LOG  {{ WP_DEBUG }} --raw --type=constant
 
 - import_tasks: mu-plugins.yml
   when: WP_MU_PLUGINS_ENABLED