Fail converting with docker

[mkoursh]

Hi, I have a problem with converting by docker. The scenario is that every time I want to convert, I create and start a docker container and after 60 seconds I execute export.js in the container. But most of the time, the resulting mp4 has no video and audio and the screen is black.

I guess, some services in container must be ready before executing export.js, but I'm not sure.
Even when I increase the time between running container and executing export.js, however, the problem remains.

I log the result of converting in a file, there is no difference with the case that converting is ok except that sizes of audio and video frames are small.

The sample output of failure converting:

37e54b2bab5710d884a9d8db8c3b039e4b0753cd-1612094255740.txt

[mkoursh]

Very strange. when I put below screenshot code after page.goto everything is working great!!!!
Line 123: await page.screenshot({fullPage: true, path:copyToPath + '/screenshot.png'});