Add support for FTP extension.

[desrosj]

From #165:

Referencing this issue: #164
And this core patch: WordPress/wordpress-develop#8589
The idea is to provide FTP testing features to the image to test and debug FTP-related topics.

The GHA workflows do not currently support pull requests that originate from a fork.

cc @SirLouen

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[SirLouen]

From #165:

Referencing this issue: #164
And this core patch: WordPress/wordpress-develop#8589
The idea is to provide FTP testing features to the image to test and debug FTP-related topics.

The GHA workflows do not currently support pull requests that originate from a fork.

cc @SirLouen

How shall we PR then?

[desrosj]

We need to look at adding support for this. Because the workflows result in containers that are published, it needs to be through through carefully. I know it's a poor contributor experience. Apologies for that.

This one can be used for now. It seems there's something off in the proposed changes, though.