diff --git a/conf_script.sh b/conf_script.sh
index 4b9fdd3..cff1cc0 100644
--- a/conf_script.sh
+++ b/conf_script.sh
@@ -1,10 +1,18 @@
 #!/bin/bash
 
-if [ -z "$HEROKU_APP_NAME" ]; then
-  echo "HEROKU_APP_NAME is not set. Exiting."
-  exit 1
+if [ -n "$HEROKU_APP_ID" ] && [ -n "$HEROKU_APP_NAME" ]; then
+  APP_URL="https://${HEROKU_APP_NAME}-${HEROKU_APP_ID}.herokuapp.com/"
+else
+  if [ -f /app/app_link.txt ]; then
+    APP_URL=$(cat /app/app_link.txt)
+  else
+    echo "Neither HEROKU_APP_NAME/ID nor /app/app_link.txt is available. Exiting."
+    exit 1
+  fi
 fi
 
+echo $APP_URL
+
 if [[ $DATABASE_URL =~ ^postgres://([^:]+):([^@]+)@([^:]+):([0-9]+)/([^/]+)$ ]]; then
     DB_USER="${BASH_REMATCH[1]}"
     DB_PASS="${BASH_REMATCH[2]}"
@@ -15,10 +23,6 @@ else
     exit 1
 fi
 
-APP_URL=$(< /app/app_link.txt)
-APP_URL2="https://${HEROKU_APP_NAME}.herokuapp.com/"
-echo $APP_URL2
-
 mkdir -p /var/lib/gitea/custom/conf
 
 echo "[server]" > /var/lib/gitea/custom/conf/app.ini