Allow to tune pruning in docker entrypoint

By default the node keeps all the blocks, but only the last 256 states.

Keeping all the states can quickly become quite heavy, and would only be used for some public mirror nodes dedicated to archive exploration.

--state-pruning <PRUNING_MODE>
    Specify the state pruning mode, a number of blocks to keep or 'archive'.
    
    Default is to keep only the last 256 blocks, otherwise, the state can be kept for all of the blocks (i.e 'archive'), or for all of the canonical blocks (i.e 'archive-canonical').

--blocks-pruning <COUNT>
    Specify the blocks pruning mode, a number of blocks to keep or 'archive'.

This configuration could be added to the docker entrypoints.