Revert "Create engineer specific staging environment" (#54052)

.devcontainer/.gh-kustomize-version

@@ -1 +0,0 @@
-v3.0.5

.devcontainer/devcontainer.json

@@ -11,8 +11,7 @@
 
   // Install features. Type 'feature' in the VS Code command palette for a full list.
   "features": {
-    "ghcr.io/devcontainers/features/sshd:1": {},
-    "ghcr.io/devcontainers/features/github-cli:1": {}
+    "sshd": "latest"
   },
 
   "customizations": {
@@ -44,11 +43,6 @@
           "permissions": {
             "contents": "write"
           }
-        },
-        "github/gh-kustomize": {
-          "permissions": {
-            "contents": "read"
-          }
         }
       }
     }
@@ -63,9 +57,8 @@
     }
   },
 
-  "onCreateCommand": ".devcontainer/on-create-command.sh",
   // Use 'postCreateCommand' to run commands after the container is created.
-  "postCreateCommand": ".devcontainer/post-create-command.sh",
+  "postCreateCommand": "npm ci",
 
   // Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
   "remoteUser": "node",

.devcontainer/on-create-command.sh

@@ -1 +0,0 @@
-gh extension install github/gh-kustomize --pin "$(cat .devcontainer/.gh-kustomize-version)" || true

.devcontainer/post-create-command.sh

@@ -1 +0,0 @@
-npm ci