message: Docs: Fix Starting Container Instructions for RocksDB Iroha
diff: @@ -30,7 +30,10 @@ Starting Iroha Node
  Creating a Docker Network
  ^^^^^^^^^^^^^^^^^^^^^^^^^
  -To operate, Iroha requires a ``PostgreSQL`` database.
  +To operate, Iroha requires a ``PostgreSQL`` database or ``RocksDB``.
  +If you prefer ``PostgreSQL``, you will need a container running it alongside Iroha.
  +
  +
  Let's start with creating a Docker network, so containers for Postgres and
  Iroha can run on the same virtual network and successfully communicate.
  In this guide we will call it ``iroha-network``, but you can use any name.
  @@ -43,6 +46,8 @@ In your terminal write following command:
  Starting PostgreSQL Container
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  +.. note:: You do not need to start this container if your plan is to use Iroha with RocksDB and not PostgreSQL. Just skip to the next step.
  +
  Now we need to run ``PostgreSQL`` in a container, attach it to the network
  you have created before, and expose ports for communication:
  @@ -114,6 +119,8 @@ Let's start Iroha node in Docker container with the following command:
  -e KEY='node0' \
  hyperledger/iroha:latest
  +.. note:: If you are using Iroha with RocksDB, please add ``--entrypoint irohad`` to these parameters, to skip the PostgreSQL container check.
  +
  If you started the node successfully you would see the container id in the same console where you started the container.
  Let's look in details what this command does:
  