Why devcontainers features are not cached?

[ThePlenkov]

Hi I just noticed that working on any change in my devcontainer Dockerfile , features are always applied newly installing everything again and again, I find a very inefficient way.

So by saving time not to write a code in a Dockerfile ( like by manually installing som CLI ) in the end I pay with much more time rebuilding features every time.

Do we have a solution for that?

My advise is to change the sequence of the build. First we need to build a base image of a devcontianer with all features, and then use this image as a base in our dockerfile. Do you think is feasible? Thank you!