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Merge pull request #3142 from govindrai/patch-1 

Add information on WORKDIR
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Sebastiaan van Stijn 2021-12-08 11:41:54 +01:00 committed by GitHub
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docs/reference/builder.md
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@ -1824,6 +1824,11 @@ 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