use condition/healthcheck for searcher startup

[sbellem]

healthcheck in builder can be something like:

 curl -k -X POST https://localhost:8545 -H "Content-Type: application/json" -d "{\"method\":\"eth_blockNumber\",\"params\":[],\"id\":1,\"jsonrpc\":\"2.0\"}" | jq .result | xargs printf "%d\n" | > some_block_height 

last pipe needs some work

[njeans]

curl -s -k -X POST https://localhost:8545 -H "Content-Type: application/json"
-d "{"method":"eth_blockNumber","params":[],"id":1,"jsonrpc":"2.0"}" |
jq .result |
xargs printf "%d" | xargs test 25 -lt