diff --git a/core/files/entrypoint_nginx.sh b/core/files/entrypoint_nginx.sh
old mode 100755
new mode 100644
index 51744c3..a989db2
--- a/core/files/entrypoint_nginx.sh
+++ b/core/files/entrypoint_nginx.sh
@@ -248,7 +248,8 @@ init_nginx() {
     
     if [[ ! -f /etc/nginx/certs/cert.pem || ! -f /etc/nginx/certs/key.pem ]]; then
         echo "... generating new self-signed TLS certificate"
-        openssl req -x509 -subj '/CN=localhost' -nodes -newkey rsa:4096 -keyout /etc/nginx/certs/key.pem -out /etc/nginx/certs/cert.pem -days 365
+        openssl req -x509 -subj '/CN=localhost' -nodes -newkey rsa:4096 -keyout /etc/nginx/certs/key.pem -out /etc/nginx/certs/cert.pem -days 365 \
+            -addext "subjectAltName = DNS:localhost, IP:127.0.0.1, IP:::1"
     else
         echo "... TLS certificates found"
     fi