Reverted some changes

Terraform/server1.sh

@@ -141,14 +141,14 @@ echo "=== Configuring NGINX as reverse proxy ==="
 cat << EOF > /etc/nginx/conf.d/springboot.conf
 server {
     listen 80;
-    server_name _;
+    server_name localhost;
 
     location / {
         proxy_pass http://localhost:8080;
-        proxy_set_header Host $host;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header Host \$host;
+        proxy_set_header X-Real-IP \$remote_addr;
+        proxy_set_header X-Forwarded-For \$proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto \$scheme;
     }
 }
 EOF