[TT-13507] Fix for custom domains with substring listen path

docker/services/httpbin.yml

@@ -2,6 +2,7 @@
 services:
   httpbin:
     image: tykio/ci-tools:latest
+    platform: linux/amd64
     networks:
       - proxy
     ports:

gateway/api_loader.go

@@ -924,21 +924,28 @@ func (gw *Gateway) loadGraphQLPlayground(spec *APISpec, subrouter *mux.Router) {
 	})
 }
 
+func sortSpecsByListenPath(specs []*APISpec) {
+	// sort by listen path from longer to shorter, so that /foo
+	// doesn't break /foo-bar
+	sort.Slice(specs, func(i, j int) bool {
+		// we sort by the following rules:
+		// - decreasing order of listen path length
+		// - if a domain is empty it should be at the end
+		if (specs[i].Domain == "") != (specs[j].Domain == "") {
+			return specs[i].Domain != ""
+		}
+		return len(specs[i].Proxy.ListenPath) > len(specs[j].Proxy.ListenPath)
+	})
+}
+
 // Create the individual API (app) specs based on live configurations and assign middleware
 func (gw *Gateway) loadApps(specs []*APISpec) {
 	mainLog.Info("Loading API configurations.")
 
 	tmpSpecRegister := make(map[string]*APISpec)
 	tmpSpecHandles := new(sync.Map)
 
-	// sort by listen path from longer to shorter, so that /foo
-	// doesn't break /foo-bar
-	sort.Slice(specs, func(i, j int) bool {
-		if specs[i].Domain != specs[j].Domain {
-			return len(specs[i].Domain) > len(specs[j].Domain)
-		}
-		return len(specs[i].Proxy.ListenPath) > len(specs[j].Proxy.ListenPath)
-	})
+	sortSpecsByListenPath(specs)
 
 	// Create a new handler for each API spec
 	apisByListen := countApisByListenHash(specs)