diff --git a/updater/docker-compose.yml b/updater/docker-compose.yml
index fa74e92..7a0ff52 100644
--- a/updater/docker-compose.yml
+++ b/updater/docker-compose.yml
@@ -6,4 +6,4 @@ services:
     env_file:
       - .env
     volumes:
-      - ${DOCKER_CONFIG_DIR}:/config
\ No newline at end of file
+      - ${DOCKER_CONFIG_DIR}:${DOCKER_CONFIG_DIR}
\ No newline at end of file
diff --git a/updater/webhook.php b/updater/webhook.php
index cb7f490..10e8ce6 100644
--- a/updater/webhook.php
+++ b/updater/webhook.php
@@ -9,6 +9,12 @@ if (empty($secret_key)) {
     exit();
 }
 
+$docker_config_dir = getenv('DOCKER_CONFIG_DIR');
+if (empty($docker_config_dir)) {
+    error_log('FAILED - docker config dir missing from environment');
+    exit();
+}
+
 // check for POST request
 if ($_SERVER['REQUEST_METHOD'] != 'POST') {
     error_log('FAILED - not POST - ' . $_SERVER['REQUEST_METHOD']);
@@ -60,9 +66,9 @@ if (json_last_error() !== JSON_ERROR_NONE) {
 // success, log something without error_log
 error_log('SUCCESS - ' . $decoded['ref']);
 
-chdir('/config');
+chdir($docker_config_dir);
 exec('git pull');
-exec('docker compose up -d --quiet-pull > /proc/1/fd/1 2>/proc/1/fd/2 &');
+exec('docker compose up -d --quiet-pull > /dev/stdout 2>/dev/stderr &');
 
 // send return code and text message
 http_response_code(200);