Why is this ENTRYPOINT incorrect?

Question

My DockerFile has an ENTRYPOINT that just echoes ENTRYPOINT echo %windir%\system32\inetsrv\appcmd to the command window.

• This syntax works: ENTRYPOINT echo %windir%\system32\inetsrv\appcmd
• This doesn't: ENTRYPOINT ["echo", "%windir%\system32\inetsrv\appcmd"]

The output is '[\"echo\"' is not recognized as an internal or external command, operable program or batch file.

What's the different between these two syntaxes?

Answer 1

The answer was in the documentation (who'd have thought that?)

The first form executes in a shell, and is therefore equivalent to anything you might type into it.

The second form doesn't execute in a shell, it just executes the file with the provided arguments.