• I confirm that this is an issue rather than a question.

It's base on #2221。

The doc folder is less than 10M in size, and more than a half of it's size are images. So I think that vuepress should have the ability to build it with 2GB memory in use.

We should consider that some of the project which is using vuepress to build docs have the need to run on vitual machines with 4GB memory. But now vuepress often use more than 4GB memory itself while building.

Maybe some optimization is needed.

A demo here: https://github.com/Mister-Hope/vuepress-stress-test

It is falling on CI with the default command vuepress build