frontend: add nginx.conf to limit worker processes (#226)

set the number of nginx workers to 2 to avoid exceeding memory, which can happen with default worker_processes: auto due to the cpu limit setting.

frontend/Dockerfile

@@ -1,4 +1,4 @@
-# central place to configure the production replayweb.pgae loading prefix
+# central place to configure the production replayweb.page loading prefix
 ARG RWP_BASE_URL=https://cdn.jsdelivr.net/npm/replaywebpage@1.5.8/
 
 FROM node:16 as build
@@ -32,7 +32,8 @@ ENV RWP_BASE_URL=${RWP_BASE_URL}
 
 COPY --from=build /app/dist /usr/share/nginx/html
 
-COPY ./nginx.conf.template /etc/nginx/templates/
+COPY ./nginx.conf /etc/nginx/nginx.conf
+COPY ./frontend.template /etc/nginx/templates/
 
 RUN rm /etc/nginx/conf.d/*
 

frontend/nginx.conf

@@ -0,0 +1,31 @@
+user  nginx;
+worker_processes  2;
+
+error_log  /var/log/nginx/error.log notice;
+pid        /var/run/nginx.pid;
+
+
+events {
+    worker_connections  1024;
+}
+
+
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
+                      '$status $body_bytes_sent "$http_referer" '
+                      '"$http_user_agent" "$http_x_forwarded_for"';
+
+    access_log  /var/log/nginx/access.log  main;
+
+    sendfile        on;
+    #tcp_nopush     on;
+
+    keepalive_timeout  65;
+
+    #gzip  on;
+
+    include /etc/nginx/conf.d/*.conf;
+}