This removes our Alpine 3.16-based test image as it was heavily flaky (failing with timeouts in about every other test run) and we have no idea how to fix it. On the other hand, we have run ChromicPDF on Alpine 3.16 for years and it worked perfectly fine. Additionally, the situation seems to have improved with more recent Chromiums a lot, so that the other test images do not have timeout issues anymore. Alpine 3.16 is also quite old by now, so I conclude we're ok to just drop it, in favor of having green test runs again some day.
This removes our Alpine 3.16-based test image as it was heavily flaky (failing with timeouts in about every other test run) and we have no idea how to fix it. On the other hand, we have run ChromicPDF on Alpine 3.16 for years and it worked perfectly fine. Additionally, the situation seems to have improved with more recent Chromiums a lot, so that the other test images do not have timeout issues anymore. Alpine 3.16 is also quite old by now, so I conclude we're ok to just drop it, in favor of having green test runs again some day.