By neildaemond, an 'any-stack' hacking grasshopper.
Taking notes while tinkering with:

So, I asked on freenode ( #webpack ) and realised the answer before I could hear a response

│18:10:30 neildaemond | using this webpack.config.js, I end up with some files  │
│                     | like "27474d2c2aa69b9fff15b5748ef7be30.gif".. It all    │
│                     | works, but on the web server I want them to load from   │
│                     | another location like "domain.com/another/custom/path/2 │
│                     | 7474d2c2aa69b9fff15b5748ef7be30.gif", not at root       │
│                     | (domain.com/27474d2c2aa69b9fff15b5748ef7be30.gif)       │
│18:10:48 neildaemond | https://pastebin.com/AJKS9yf7                           │
│18:23:43 neildaemond | oh, I figured it out.. an option for the file-loader.   │
│                     | updated the webpack.config.js to:                       │
│                     | https://pastebin.com/GQvWF9H7                           │

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