[next] Added trust proxy configuration (#2471)

* feat: added trust proxy configuration

* chore: version bump

src/core/server/app/index.ts

@@ -104,9 +104,12 @@ export const listenAndServe = (
 function configureApplication(options: AppOptions) {
   const { parent } = options;
 
-  // Trust the first proxy in front of us, this will enable us to trust the fact
-  // that SSL was terminated correctly.
-  parent.set("trust proxy", 1);
+  // Trust the proxy in front of us, this will enable us to trust the fact that
+  // SSL was terminated correctly.
+  const trust = options.config.get("trust_proxy");
+  if (trust) {
+    parent.set("trust proxy", trust);
+  }
 
   // Setup the view config.
   setupViews(options);

src/core/server/config.ts

@@ -59,6 +59,14 @@ const config = convict({
     default: "en-US",
     env: "LOCALE",
   },
+  trust_proxy: {
+    doc:
+      'When provided, it configures the "trust proxy" settings for Express (See https://expressjs.com/en/guide/behind-proxies.html)',
+    format: String,
+    default: "",
+    env: "TRUST_PROXY",
+    arg: "trustProxy",
+  },
   enable_graphiql: {
     doc: "When true, this will enable the GraphiQL interface at /graphiql",
     format: Boolean,