iconv isn't working

[Kalyse]

When using with PHP, returns error

Notice: iconv(): Wrong charset, conversion from `utf-8' to `us-ascii//TRANSLIT' is not allowed

Essentially the same issue as reported on docker-library/php#240

[ncopa]

It is technically correct behavior. POSIX specifies that an argument to iconv_open containing / is to be treated as a pathname to a charmap file. Explained in a related issue: akrennmair/newsbeuter#364 (comment)

[andypost]

docker-library/php#240 (comment) helps

but surely it's bad idea to add dependency from testing to community