Fix devcontainer setup and bump node version to 22 (#2652)

.devcontainer/Dockerfile

@@ -1,7 +1,7 @@
 # See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.158.0/containers/typescript-node/.devcontainer/base.Dockerfile
 
-ARG VARIANT="18"
+ARG VARIANT="22"
-FROM mcr.microsoft.com/vscode/devcontainers/typescript-node:0-${VARIANT}
+FROM mcr.microsoft.com/vscode/devcontainers/typescript-node:${VARIANT}
 
 # Set an environment variable to be able to detect we are in dev container
 ENV NODE_ENV=devcontainer

.devcontainer/devcontainer.json

@@ -4,8 +4,11 @@
     "dockerfile": "Dockerfile",
     "context": ".."
   },
-  "appPort": [3000],
+  "appPort": ["3000:3000"],
   "postCreateCommand": "script/setup",
+  "customizations": {
+    "vscode": {
+
       "extensions": [
         "davidanson.vscode-markdownlint",
         "editorconfig.editorconfig",
@@ -23,6 +26,8 @@
           "editor.wordWrap": "wordWrapColumn",
           "editor.wordWrapColumn": 80
         }
+      }
+    }
   },
   // Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
   "remoteUser": "node"