diff --git a/config/autoload/url-shortener.global.php b/config/autoload/url-shortener.global.php
index 35f95ec6..5193ee1b 100644
--- a/config/autoload/url-shortener.global.php
+++ b/config/autoload/url-shortener.global.php
@@ -13,13 +13,15 @@ return (static function (): array {
     $webhooks = env('VISITS_WEBHOOKS');
     $shortCodesLength = (int) env('DEFAULT_SHORT_CODES_LENGTH', DEFAULT_SHORT_CODES_LENGTH);
     $shortCodesLength = $shortCodesLength < MIN_SHORT_CODES_LENGTH ? MIN_SHORT_CODES_LENGTH : $shortCodesLength;
+    $useHttps = env('USE_HTTPS'); // Deprecated. For v3, set this to true by default, instead of null
 
     return [
 
         'url_shortener' => [
             'domain' => [
-                'schema' => env('SHORT_DOMAIN_SCHEMA', 'http'),
-                'hostname' => env('SHORT_DOMAIN_HOST', ''),
+                // Deprecated SHORT_DOMAIN_* env vars
+                'schema' => $useHttps !== null ? (bool) $useHttps : env('SHORT_DOMAIN_SCHEMA', 'http'),
+                'hostname' => env('DEFAULT_DOMAIN', env('SHORT_DOMAIN_HOST', '')),
             ],
             'validate_url' => (bool) env('VALIDATE_URLS', false), // Deprecated
             'visits_webhooks' => $webhooks === null ? [] : explode(',', $webhooks),
diff --git a/docker/README.md b/docker/README.md
index 5269ebb6..9f97642c 100644
--- a/docker/README.md
+++ b/docker/README.md
@@ -11,8 +11,8 @@ It exposes a shlink instance served with [swoole](https://www.swoole.co.uk/), wh
 
 The most basic way to run Shlink's docker image is by providing these mandatory env vars.
 
-* `SHORT_DOMAIN_HOST`: The custom short domain used for this shlink instance. For example **doma.in**.
-* `SHORT_DOMAIN_SCHEMA`: Either **http** or **https**.
+* `DEFAULT_DOMAIN`: The default short domain used for this shlink instance. For example **doma.in**.
+* `USE_HTTPS`: Either **true** or **false**.
 * `GEOLITE_LICENSE_KEY`: Your GeoLite2 license key. [Learn more](https://shlink.io/documentation/geolite-license-key/) about this.
 
 To run shlink on top of a local docker service, and using an internal SQLite database, do the following:
@@ -21,8 +21,8 @@ To run shlink on top of a local docker service, and using an internal SQLite dat
 docker run \
     --name shlink \
     -p 8080:8080 \
-    -e SHORT_DOMAIN_HOST=doma.in \
-    -e SHORT_DOMAIN_SCHEMA=https \
+    -e DEFAULT_DOMAIN=doma.in \
+    -e USE_HTTPS=true \
     -e GEOLITE_LICENSE_KEY=kjh23ljkbndskj345 \
     shlinkio/shlink:stable
 ```