FRQ: display the build command of each layer

[missedone]

hey, for now dockviz images -t just show the layer id and virtual size, i'd like to see the corresponding build command of that layer as well. (probably we can introduce a new flag for this).
thx

[justone]

I just released v0.6.0, which includes a --show-created-by flag which should do what you need.

Let me know if you have any difficulty with it.