Publish should display an interactive warning if host.json is not found in current directory

[lindydonna]

You can accidentally publish a function to a Function App if you happen to be in the function folder.

Should do the following:

• Look for host.json in the current folder
• If not found, display the following message: Warning: host.json not found in current folder. Proceed with publishing the current directory to Azure Function App $name?
• Add --ignore command line argument (-i for short) to not prompt

[ahmelsayed]

Alternatively we can throw an error if host.json is not found and have the flag override it.
We can also travel up the directory tree to find a host.json and then use that directory, throw error if not, use current directory if --ignore is passed (how about --ignoreHostJsonNotFound instead. I think --ignore might be too generic?)

What do you think?

[lindydonna]

Agreed on both counts. I like traversing up to find host.json, that's a nicer customer experience.