After we fixed bundled libyaml to correctly print 4-byte Unicode
characters, it is no longer compatible with the upstream version, so
enable building with bundled libyaml for every platform.
This way the tests will pass.

Follow-up #4090

As there is now support for Alpine Linux in packpack, there is no
longer any need in a custom Dockerfile builder.

This patch is to get in line with the Alpine support in packpack:

- don't rely on git, and use a source package instead
- add subpackages with debug symbols, documentation and headers
- don't build tarantool 3 times in a row