update dockerfile to remove optimisation

Necessary to keep scripts repository

scripts/t0-1mine-2sync.sh

-#!/bin/bash
+#!/bin/sh
 export MINER_SIGNING_KEY=4c0883a69102937d6231471b5dbb6204fe5129617082792ae468d01a3f362318;
 
 # MINER_SIGNING_KEY & MNEMONIC env vars are set on workstation.
@@ -11,12 +11,12 @@ export RPC_URL=http://127.0.0.1:8545;
 export CHAIN_ID=636363;
 
 # Mine on eco1 with `--max-block 0`
-# 
+#
 #  rm -rf /home/angraign/.local/share/truite/chaindata/
 # ./truite --chain-spec-file clermont-bootnode.ron --no-dns-discovery --cidr 192.168.0.0/16 --rpc-listen-address 0.0.0.0:8545 --max-block 0
 # export RPC_URL=http://ecomobicoin-1.cri.local.isima.fr:8545; export CHAIN_ID=6363; ./target/release/testnet-injector mine
 # ./truite --chain-spec-file clermont-bootnode.ron --no-dns-discovery --cidr 192.168.0.0/16 --rpc-listen-address 0.0.0.0:8545
-# 
+#
 
 # Mine
 for ((i=1; i<=100; i++))