Use the new go:embed feature to produce a single, self-contained binary.

[naikrovek]

the //go:embed compiler directive now (since Go 1.16) allows you to embed files into the compiled binary as a read-only filesystem.

This means that you no longer need to have the files you're serving be present in the directory that you're running the executable from; they can be inside the binary itself.

That doesn't matter a lot if you're self-hosting this, but if you want to share it with people and don't want to leave the webserver process running forever on your own machine, sharing a single binary and letting everyone use their own instance is a lot easier.

All I had to do to make this work was change main.go to this:
https://gist.github.com/naikrovek/1ba61a60b66f0bb40dbe105b09cd052e

I don't know what would be needed for the two experimental versions of the tool.