I'm not sure where "Biostars Next" is headed but I believe there has been a long-standing demand for "runnable" solutions to tougher programming questions. From a technical standpoint, this goal is now achievable.
One of the early attempts at this was Radhouane Aniba's coderscrowd.com, which had some tacit support for Python and R, and in many ways was designed from the ground up to enable Q&A and teaching through debugging examples. That site never quite caught on for whatever reason but was ahead of its time in many ways.
One solution available today (but not as Q&A-friendly) is the CodeOcean platform. CodeOcean hosts a number of bioinformatics and genomics "capsules" (data, code and environment) that serve as reproducible runnable analyses to accompany manuscripts. CodeOcean might augment Biostars answers in some important ways.
I posted this solution to https://biostars.org/p/439754 which had spiraled out of control in dialogue
The process went fairly smoothly. CodeOcean has good support for Docker and Conda. There is a slight delay between submitting a capsule for approval and ultimately having it made public. The platform is not open or really free, though a published or public capsule doesn't count against the author's monthly free quota in terms of storage or compute.
Would love to hear your thoughts.