chore(gtm): Optimize Docker container with multi-stage build and flat structure

gtm-architect/server.cjs

@@ -1,15 +1,31 @@
 const express = require('express');
 const { spawn } = require('child_process');
+const fs = require('fs');
+const path = require('path');
 const app = express();
 const port = 3005; // Port for the GTM Architect service
 
 app.use(express.json({ limit: '50mb' }));
 
-// Middleware to serve static files from the React app
-app.use(express.static('.'));
+// Determine Environment and Paths
+const distPath = path.join(__dirname, 'dist');
+const isProduction = fs.existsSync(distPath);
+const staticDir = isProduction ? distPath : __dirname;
+
+console.log(`[Init] Serving static files from: ${staticDir}`);
+app.use(express.static(staticDir));
+
+// Determine Python Script Path
+// In Docker (optimized), script is in same dir. Locally, it might be one level up.
+let pythonScriptPath = path.join(__dirname, 'gtm_architect_orchestrator.py');
+if (!fs.existsSync(pythonScriptPath)) {
+    pythonScriptPath = path.join(__dirname, '../gtm_architect_orchestrator.py');
+}
+console.log(`[Init] Using Python script at: ${pythonScriptPath}`);
+
 
 function callPythonScript(mode, data, res) {
-    const pythonProcess = spawn('python3', ['../gtm_architect_orchestrator.py', '--mode', mode]);
+    const pythonProcess = spawn('python3', [pythonScriptPath, '--mode', mode]);
 
     let pythonData = '';
     let errorData = '';
@@ -53,7 +69,7 @@ app.post('/api/gtm', (req, res) => {
 
 // Serve the main index.html for any other requests to support client-side routing
 app.get('*', (req, res) => {
-  res.sendFile(__dirname + '/index.html');
+  res.sendFile(path.join(staticDir, 'index.html'));
 });