Update WORKDIR command information
@@ -1822,6 +1822,11 @@ RUN pwd
The output of the final `pwd` command in this `Dockerfile` would be
`/path/$DIRNAME`
+If not specified, the default working directory is `/`. In practice, if you aren't building a Dockerfile from scratch (`FROM scratch`),
+the `WORKDIR` may likely be set by the base image you're using.
+
+Therefore, to avoid unintended operations in unknown directories, it is best practice to set your `WORKDIR` explicitly.
+
## ARG
```dockerfile
