Fix proxy configuration to prevent 502 Bad Gateway errors

Author: PabloG02

docker/deploy-local-build/default.conf

@@ -62,6 +62,11 @@ server {
         resolver 1.1.1.1; # DNS resolver for domain name lookup.
         set $upstream_endpoint https://hub.docker.com; # The upstream service to proxy requests to.
 
+        # Required to avoid 502 Bad Gateway errors
+        proxy_set_header Host hub.docker.com;
+        proxy_ssl_server_name on;
+        proxy_ssl_name hub.docker.com;
+
         # Enable proxy caching
         proxy_cache dockerhub_cache;
         proxy_cache_valid 200 302 10m; # Cache 200 and 302 responses for 10 minutes