Eliminate CRLF from the copied flutter directory for Docker build

[AlexV525]

Force eliminate CRLF from the copied flutter directory.

Issues fixed (partially) by this PR (if any):

• Fix website local builds on Windows #6443 (comment)
• [Makefile] Impossible to setup on Windows #8272 (comment)

Presubmit checklist

• This PR doesn’t contain automatically generated corrections (Grammarly or similar).
• This PR follows the Google Developer Documentation Style Guidelines — for example, it doesn’t use i.e. or e.g., and it avoids I and we (first person).
• This PR uses semantic line breaks of 80 characters or fewer.

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[atsansone]

@AlexV525 : I like this change. Did it work on your machine? (I ask because I have no easy way to test.)

[AlexV525]

I didn't run the full process but the flutter one works.

[parlough]

I haven't had access to a Windows setup for a while, but I'll work on getting something set up this weekend.

Thanks for staying on top of this Alex! Would you mind adding a comment to explain the line? I think it might be easy to forget why it's there in the future.

[AlexV525]

Would you mind adding a comment to explain the line? I think it might be easy to forget why it's there in the future.

Oh, I just place the command as an alias: REPLACE_CRLF, is it self-explaining enough?

[AlexV525]

Nah, it not actually working since my clone is already in LF.

[AlexV525]

Thanks for the ChatGPT, the command is now working.

[AlexV525]

Notice that this only resolves a single part of the whole setup process.

[AlexV525]

Alternatively, we can always clone the flutter repo rather than copying.

[AlexV525]

Alternatively, we can always clone the flutter repo rather than copying.

I'd perfer this after some experiments. Will submit a separate PR for it. And you guys can decide which to take.

[AlexV525]

See #9307

[AlexV525]

Closing in favor of #9307.