Switch to central config loader using mounted secret files.

src/process.ts

@@ -3,6 +3,7 @@ import { createInterface } from 'node:readline';
 import XXH from 'xxhashjs';
 import { log } from './logger.js';
 import { DataIngressPisData } from '@owlboard/backend-data-contracts';
+import type { GeneralConfig } from './config.js';
 
 const BASE_URL = process.env.BASEURL || 'https://owlboard.info'
 
@@ -18,8 +19,8 @@ interface InputRecord {
     stops: string[];
 }
 
-export async function* processPisStream(inputStream: Readable) {
-    const TOC = process.env.TOC;
+export async function* processPisStream(cfg: GeneralConfig, inputStream: Readable) {
+    const TOC = cfg.TOC;
     if (!TOC) {
         log('ERROR', "TOC not set: Exit code 19");
         process.exit(19);