Use a separate cache for the child compilation.
Use a separate cache for the child compilation.

Sharing the cache cause bad issues with wrong module ids.

jantimon/html-webpack-plugin,jantimon/html-webpack-plugin,SpaceK33z/html-webpack-plugin,ampedandwired/html-webpack-plugin,SimenB/html-webpack-plugin,SpaceK33z/html-webpack-plugin,ampedandwired/html-webpack-plugin,dotch/html-webpack-plugin,SimenB/html-webpack-plugin