[adamgordonbell]

You may want to use secrets like this:

     earthly \
      --secret-file config=/home/user/.aws/config \
      +build

But yes, Earthly optimizes for reproducibility, so implicitly pulling in ENVs is not something it does.

[andyonthewings]

The required build arg and env var names are already listed in the Earthfile as `ARG` and `RUN --secret ...`. So I think specifying it in the commandline is redundant.

[honkycat]

I didn't use secrets because it is a prototype, and I need to explicitly give RUNs access to secret values, and I got sick of the boilerplate.