added http to https redirection in nginx image

sources/nginx/orthanc-nginx-https.conf

@@ -23,3 +23,15 @@ server {
     # include all reverse proxies that have been enabled through env var (check docker-entrypoint.sh)
 	include /etc/nginx/enabled-reverse-proxies/*.conf;
 }
+
+server {
+
+    listen 80 default_server;
+
+
+    server_name _;
+
+
+    return 301 https://$host$request_uri;
+
+}