is-docker is used at run time in 313 crates (of which 307 optionally). It is a direct run-time dependency in 2 crates. It's used at build time in 2 crates (of which 2 optionally, ). It's used only as a dev dependency in 13 crates.

Depender (with downloads and own rev deps) is-docker version
261K 3 is-wsl ^0.2.0
280 escape-artist build ^0.2.0