Fix devcontainer build failure (#12837)

* add post-installation script

* set zsh as default terminal and make post-install execution on postcreate

* rename file

* rename script

* Create devcontainers_ci.yml

* Update devcontainer.json

* Update devcontainers_ci.yml

Never push image built here. It's for build testing purpose only.

* postCreateCommand update to reflect that the shell script has been renamed.

* update devcontainer readme file

* trigger workflow only on devcontainer/** changes

* prettier refactor

.github/workflows/devcontainer_ci.yml

@@ -0,0 +1,19 @@
+name: Test DevContainer Build
+
+on:
+  push:
+    paths:
+      - ".devcontainer/**"
+  pull_request:
+    paths:
+      - ".devcontainer/**"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: devcontainers/ci@v0.3
+        with:
+          push: never
+          runCmd: "true"