chore: update GAE flex websockets to use newer runtimes. (GoogleCloudPlatform#2030)

Author: kennethye1

appengine/flexible/websockets/additional-supervisord.conf

@@ -1,11 +1,6 @@
 [program:socket-server]
 command = php %(ENV_APP_DIR)s/socket-server.php
 enviroment = PORT="8000"
-stdout_logfile = /dev/stdout
-stdout_logfile_maxbytes=0
-stderr_logfile = /dev/stderr
-stderr_logfile_maxbytes=0
-user = root
 autostart = true
 autorestart = true
 priority = 10

appengine/flexible/websockets/app.yaml

@@ -16,4 +16,6 @@ manual_scaling:
 #   session_affinity: true
 
 runtime_config:
-  document_root: .
+  document_root: .
+  operating_system: ubuntu22
+  runtime_version: 8.3

appengine/flexible/websockets/nginx-app.conf

@@ -9,5 +9,5 @@ location /ws {
 
 location / {
   # try to serve files directly, fallback to the front controller
-  try_files $uri /$front_controller_file$is_args$args;
+  try_files $uri /index.html$is_args$args;
 }

appengine/flexible/websockets/nginx.conf

@@ -0,0 +1,44 @@
+daemon off;
+
+worker_processes  auto;
+error_log /dev/stderr info;
+
+
+events {
+    worker_connections  4096;
+}
+
+
+http {
+    server_tokens off;
+    default_type  application/octet-stream;
+
+    client_max_body_size 32m;
+
+    access_log  /dev/stdout;
+
+    sendfile        on;
+
+    keepalive_timeout  650;
+    keepalive_requests 10000;
+
+    map $http_x_forwarded_proto $fastcgi_https {
+        default '';
+        https on;
+    }
+
+
+    upstream php-fpm {
+        server 127.0.0.1:9000 max_fails=3 fail_timeout=3s;
+    }
+
+    server {
+
+        listen       8080;
+        root /workspace/.;
+        index index.php index.html index.htm;
+
+
+        include /workspace/nginx-app.conf;
+    }
+}