This change modifies how steps are evaluated in the program. Previously,
the execution relied on looking for the digest we were going to stop at
and evaluating the step right before that digest. This could result in
some gaps where it erroneously didn't execute inputs for the current
step as it skipped those digests.
Now, the evaluation reads the inputs and executed those directly rather
than relying on the evaluation of previous steps in the sequence. This
should make the evaluation of inputs more accurate and allow us to have
better breakpoints on things like the copy operation.
Due to the change, it's also easier for us to include the different
inputs in the file explorer.
Signed-off-by: Jonathan A. Sternberg <jonathan.sternberg@docker.com>
Jonathan A. Sternberg
4345a8e50b