Expose devcontainer ports (#9757)

- Allow external connection to DB

.devcontainer/devcontainer.json

@@ -38,11 +38,17 @@
   },
 
   // Use 'forwardPorts' to make a list of ports inside the container available locally.
-  "forwardPorts": [5173, 8000, 8080],
+  "forwardPorts": [5173, 5432, 6379, 8000, 8080],
   "portsAttributes": {
     "5173": {
       "label": "Vite Server"
     },
+    "5432": {
+      "label": "PostgreSQL Database"
+    },
+    "6379": {
+      "label": "Redis Server"
+    },
     "8000": {
       "label": "InvenTree Server"
     },