Allow to create a package and install a package compiled from GitHub

Also add nginx config for reverse proxying and set up Let's Encrypt
automatically

site-cookbooks/kosmos-parity/templates/default/nginx_conf_parity.erb

@@ -0,0 +1,34 @@
+# Generated by Chef
+upstream _<%= @parity_service %> {
+  server   localhost:<%= @internal_port %>;
+}
+
+server {
+  <% if File.exist?(@ssl_cert) && File.exist?(@ssl_key) -%>
+  listen <%= @external_port %> ssl http2;
+  <% else -%>
+  listen <%= @external_port %>;
+  <% end -%>
+
+  server_name <%= @server_name %>;
+
+  access_log <%= node[:nginx][:log_dir] %>/<%= @parity_service %>.access.log json;
+  error_log <%= node[:nginx][:log_dir] %>/<%= @parity_service %>.error.log warn;
+
+  location /.well-known {
+    root "/var/www/<%= @parity_service %>";
+  }
+
+  location / {
+    # Increase number of buffers. Default is 8
+    proxy_buffers 1024 8k;
+
+    proxy_pass http://_<%= @parity_service %>;
+    proxy_http_version 1.1;
+   }
+
+  <% if File.exist?(@ssl_cert) && File.exist?(@ssl_key) -%>
+  ssl_certificate <%= @ssl_cert %>;
+  ssl_certificate_key <%= @ssl_key %>;
+  <% end -%>
+}

site-cookbooks/kosmos-parity/templates/default/nginx_conf_parity_letsencrypt.erb

@@ -0,0 +1,21 @@
+# Generated by Chef
+server {
+  listen 80; # For Let's Encrypt
+  <% if File.exist?(@ssl_cert) && File.exist?(@ssl_key) -%>
+  listen <%= @external_port %> ssl http2;
+  <% end -%>
+
+  server_name <%= @server_name %>;
+
+  access_log <%= node[:nginx][:log_dir] %>/<%= @server_name %>.access.log json;
+  error_log <%= node[:nginx][:log_dir] %>/<%= @server_name %>.error.log warn;
+
+  location /.well-known {
+    root "/var/www/<%= @server_name %>";
+  }
+
+  <% if File.exist?(@ssl_cert) && File.exist?(@ssl_key) -%>
+  ssl_certificate <%= @ssl_cert %>;
+  ssl_certificate_key <%= @ssl_key %>;
+  <% end -%>
+}