The pip docker version is really out of date

[wesleywh]

This requires docker version 3.7.3. The newest docker version is way past the 4's. This is incredibly out of date and simply doesn't work on the newer versions. This needs to be updated asap.

[johnttompkins]

This is specific to the python plugin. Moving there for better tracking.

[PatMyron]

duplicate of #73, should be fixed in #119