Fix dockerfile

Dockerfile

@@ -1,7 +1,7 @@
 FROM semibit/render-farm:latest
 
 # Install nginx
-
+USER root
 RUN apt-get update && \
     apt-get install -y \
       bash \

proxy-renderer.js

@@ -52,9 +52,12 @@ export const renderProxy = async (outFile, jobId, options) => {
 
   const framesPerChunk = options?.framesPerChunk ?? 500;
   let framesRendered = 0;
+  const chunkFiles = [];
+
   while (framesRendered < duration) {
     const endFrame = Math.min(framesRendered + framesPerChunk, duration);
     const chunkOutFile = path.join(process.cwd(), `out/${jobId}-chunk-${framesRendered}-${endFrame}.mp4`);
+    chunkFiles.push(chunkOutFile)
     if (fs.existsSync(chunkOutFile)) {
       console.log(`Job ${jobId} chunk ${framesRendered}-${endFrame} already rendered. Skipping.`);
       framesRendered = endFrame;
@@ -86,18 +89,13 @@ export const renderProxy = async (outFile, jobId, options) => {
     framesRendered = endFrame;
   }
 
-  const chunkFiles = [];
-  for (let i = 0; i < duration; i += framesPerChunk) {
-    const chunkStart = i;
-    const chunkEnd = Math.min(i + framesPerChunk, duration);
-    chunkFiles.push(path.join(process.cwd(), `out/${jobId}-chunk-${framesRendered}-${endFrame}.mp4`));
-  }
 
   const ffmpegPath = os.platform() === 'win32' ? 'ffmpeg.exe' : 'ffmpeg';
   const concatListPath = path.join(process.cwd(), 'out/concat_list.txt');
   fs.writeFileSync(concatListPath, chunkFiles.map(f => `file '${f}'`).join('\n'));
 
-  const concatCmd = `${ffmpegPath} -f concat -safe 0 -i ${concatListPath} -c copy ${outFile}`;
+  const concatCmd = `${ffmpegPath} -f concat -safe 0 -i ${concatListPath} -c:v copy -c:a aac -b:a 192k -y ${outFile}`;
+
   await new Promise((resolve, reject) => {
     console.log('Stitching chunks...: ' + concatCmd)
     exec(concatCmd, (error, stdout, stderr) => {
@@ -115,7 +113,7 @@ export const renderProxy = async (outFile, jobId, options) => {
 
   // Clean up chunk files
   for (const chunkFile of chunkFiles) {
-    fs.unlinkSync(chunkFile);
+    // fs.unlinkSync(chunkFile);
   }
   fs.unlinkSync(concatListPath);