diff --git a/config.php.example b/config.php.example
index 04658443..5e96d546 100644
--- a/config.php.example
+++ b/config.php.example
@@ -9,6 +9,7 @@
         "number_of_results" => 10,
 
         // The default theme css to use
+        // use `ls --ignore={styles,auto}.css static/css | cut -d. -f1` to list valid themes
         "default_theme" => "dark",
 
         // You can use any Invidious instance here
diff --git a/docker/README.md b/docker/README.md
index 3cb67325..291380a8 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -105,6 +105,7 @@ This Docker image was developed with high configurability in mind, so here is th
 | CONFIG_CACHE_TIME                | 20                                                                                                                                                                                                                  | integer                      | Time in minutes to store results for in the cache.                                                                                                               |
 | CONFIG_DISABLE_API               | false                                                                                                                                                                                                               | boolean                      | Disable requests to /api.php                                                                                                                                     |
 | CONFIG_SHOW_RESULT_SOURCE        | true                                                                                                                                                                                                                | boolean                      | Whether to show where the result is from on the results page                                                                                                     |
+| CONFIG_DEFAULT_THEME        | "dark"                                                                                                                                                                                                                 | "nord", "darker", "discord"                      | The default theme for users without cookies or request parameters set.                                                                       |
 
 ### Frontends
 
diff --git a/docker/attributes.sh b/docker/attributes.sh
index 23c597ab..ed13cf7b 100755
--- a/docker/attributes.sh
+++ b/docker/attributes.sh
@@ -31,6 +31,7 @@ export CONFIG_RATE_LIMIT_COOLDOWN="${CONFIG_RATE_LIMIT_COOLDOWN:-25}"
 export CONFIG_CACHE_TIME="${CONFIG_CACHE_TIME:-20}"
 export CONFIG_DISABLE_API="${CONFIG_DISABLE_API:-false}"
 export CONFIG_SHOW_RESULT_SOURCE="${CONFIG_SHOW_RESULT_SOURCE:-true}"
+export CONFIG_DEFAULT_THEME=${CONFIG_DEFAULT_THEME:-"dark"}
 
 # Supported apps integration configuration. These empty spaces can be set up using free hosts as pointers
 # A particular example is using the "https://yewtu.be" or a self-hosted host to integrate the invidious app to librey
diff --git a/docker/config.php b/docker/config.php
index 76684d7e..83357719 100644
--- a/docker/config.php
+++ b/docker/config.php
@@ -13,6 +13,7 @@
         "cache_time" => ${CONFIG_CACHE_TIME},
         "disable_api" => ${CONFIG_DISABLE_API},
 	"show_result_source" => ${CONFIG_SHOW_RESULT_SOURCE},
+	"default_theme" => "${CONFIG_DEFAULT_THEME}",
 
         "frontends" => array(
             "invidious" => array(