[docker] Use new config-builder in libra_init
[docker] Use new config-builder in libra_init

Closes: #2182
Approved by: davidiw

libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core,aptos-labs/aptos-core,libra/libra,libra/libra,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,libra/libra,aptos-labs/aptos-core,aptos-labs/aptos-core