https://github.com/dlang-tour/core/wiki/Runnable-DUB-packages provides an overview of what's currently supported.
I think the two coolest example atm are Vibe.d (https://run.dlang.io/is/gI1NA5) and mir-algorithm (https://run.dlang.io/is/3pNRH8).
[1] https://github.com/dlang-tour/core-exec/blob/master/Dockerfile
