This is a docker that automatically downloads the v8 source code. You can submit it directly to dockerhub, and it will automatically fetch v8 for you.
In China, it is very difficult to compile the v8 source code. This is because the agent cannot be configured when depot_tools fetch v8, which causes the v8 download source code to be very slow or unable to download.
Visit v8_build for a suitable version and also submit it directly to dockerhub.