feat(devcontainer): update postCreateCommand to include MongoDB FCV check and additional setup scripts

.devcontainer/app/devcontainer.json

@@ -18,7 +18,7 @@
 
   "initializeCommand": "/bin/bash .devcontainer/pdf-converter/initializeCommand.sh",
   // Use 'postCreateCommand' to run commands after the container is created.
-  "postCreateCommand": "/bin/bash ./.devcontainer/app/postCreateCommand.sh",
+  "postCreateCommand": "/bin/bash ./.devcontainer/app/postCreateCommand/main.sh",
 
   // Configure tool-specific properties.
   "customizations": {

.devcontainer/app/postCreateCommand/ensure-mongo-fcv.ts

@@ -0,0 +1,69 @@
+// Ensures MongoDB Feature Compatibility Version matches the mongo image (8.2).
+// Required when the mongo image is upgraded while existing data persists in the volume.
+// https://www.mongodb.com/ja-jp/docs/upcoming/release-notes/8.2-upgrade-standalone/
+//
+// Run with Node's native TypeScript support (>= v22.6 with strip-types,
+// enabled by default in v24+). Resolution base is pinned to apps/app/ so the
+// mongodb driver installed there can be loaded without changing cwd.
+
+import { createRequire } from 'node:module';
+
+const require = createRequire('/workspace/growi/apps/app/');
+const { MongoClient } = require('mongodb') as typeof import('mongodb');
+
+const URI = 'mongodb://mongo:27017';
+const TARGET_FCV = '8.2';
+const MAX_RETRIES = 30;
+const RETRY_INTERVAL_MS = 2000;
+
+const sleep = (ms: number): Promise<void> => new Promise(resolve => setTimeout(resolve, ms));
+
+async function waitForMongo(): Promise<void> {
+  for (let i = 0; i < MAX_RETRIES; i++) {
+    const client = new MongoClient(URI, { serverSelectionTimeoutMS: 2000 });
+    try {
+      await client.connect();
+      await client.db('admin').command({ ping: 1 });
+      return;
+    }
+    catch {
+      await sleep(RETRY_INTERVAL_MS);
+    }
+    finally {
+      await client.close().catch(() => {});
+    }
+  }
+  throw new Error(`MongoDB at ${URI} did not become ready in time`);
+}
+
+async function ensureFcv(): Promise<void> {
+  const client = new MongoClient(URI);
+  await client.connect();
+  try {
+    const admin = client.db('admin');
+    const result = await admin.command({
+      getParameter: 1,
+      featureCompatibilityVersion: 1,
+    }) as { featureCompatibilityVersion: { version: string } };
+    const version = result.featureCompatibilityVersion.version;
+    if (version === TARGET_FCV) {
+      console.log(`FCV already ${TARGET_FCV}`);
+      return;
+    }
+    await admin.command({ setFeatureCompatibilityVersion: TARGET_FCV, confirm: true });
+    console.log(`FCV upgraded: ${version} -> ${TARGET_FCV}`);
+  }
+  finally {
+    await client.close();
+  }
+}
+
+console.log('Waiting for MongoDB to be ready...');
+await waitForMongo();
+console.log(`Ensuring MongoDB featureCompatibilityVersion is ${TARGET_FCV}...`);
+try {
+  await ensureFcv();
+}
+catch (e) {
+  console.error('FCV upgrade failed:', (e as Error).message);
+}

.devcontainer/app/postCreateCommand.sh → .devcontainer/app/postCreateCommand/main.sh

@@ -35,3 +35,6 @@ turbo run bootstrap
 
 # Install Lefthook git hooks
 pnpm lefthook install
+
+# Ensure MongoDB Feature Compatibility Version matches the mongo image.
+node /workspace/growi/.devcontainer/app/postCreateCommand/ensure-mongo-fcv.ts

.devcontainer/app/postCreateCommand/package.json

@@ -0,0 +1,3 @@
+{
+  "type": "module"
+}