erlang-syntax-tools package is missing

[relbraun]

There is no possibility to compile modules with ejabberd_sql_pt.hrl lib because the latest version excluded the erlang-syntax-tools package from the Dockerfile.

[badlop]

This problem is being tracked in https://github.com/processone/ejabberd/issues/3869

[Neustradamus]

@relbraun: It has been solved?

[badlop]

This got solved with commit https://github.com/processone/ejabberd/commit/1ea53bf9405498ed7fc6656979f64f5c9aaea80e included in ejabberd 22.10, so the latest docker image should work correctly.