fix: use unique ports for modules with DEBUG-INSPECT

lib/Instance/Host.js

@@ -354,13 +354,22 @@ class ModuleHost {
 					}
 
 					// Allow running node with `--inspect`
-					const inspectFilePath = path.join(moduleInfo.basePath, 'DEBUG-INSPECT')
-					const inspectExists = !moduleInfo.isPackaged && (await fs.pathExists(inspectFilePath))
+					let inspectPort = undefined
+					if (!moduleInfo.isPackaged) {
+						try {
+							const inspectFilePath = path.join(moduleInfo.basePath, 'DEBUG-INSPECT')
+							const inspectFileStr = await fs.readFile(inspectFilePath)
+							const inspectPortTmp = Number(inspectFileStr.toString().trim())
+							if (!isNaN(inspectPortTmp)) inspectPort = inspectPortTmp
+						} catch (e) {
+							// Ignore
+						}
+					}
 
 					const cmd = [
 						// Future: vary depending on module version
 						// 'node', // For now we can use fork
-						inspectExists ? '--inspect' : undefined,
+						inspectPort !== undefined ? `--inspect=${inspectPort}` : undefined,
 						jsPath,
 					].filter((v) => !!v)
 					this.logger.silly(`Connection "${config.label}" command: ${JSON.stringify(cmd)}`)