Missing PHP extension iconv

[Calvario]

Support guidelines

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I've found a bug and checked that ...

• [X] ... the documentation does not mention anything about my problem
• [X] ... there are no open or closed issues that are related to my problem

Description

iconv is not enabled and will impact StringHelpers::inferEncoding() allowing non-utf8 https://github.com/librenms/librenms/pull/16324

Expected behaviour

iconv to be enabled

Actual behaviour

iconv is not enabled

Steps to reproduce

# cat test_iconv.php
<?php
echo function_exists('iconv') ? 'iconv function exists' : 'iconv function does not exist';
?>

# php test_iconv.php
iconv function does not exist

Docker info

N/A

Docker Compose config

No response

Logs

N/A

Additional info

Apply to all the latest images available

[lowinger42]

This is a serious issue. If someone enters Swedish characters (åäöÅÄÖ), for example on interface descriptions the poller stops/crashes. It does not occur when I'm running librenms in non-docker environment.