the contract-migration server things 'works'

apps/cic-eth/docker/entrypoints/start_tracker.sh

@@ -1,5 +1,17 @@
 #!/bin/bash
 
+set -e
+set -u
+
 . ./db.sh
 
-/usr/local/bin/cic-eth-trackerd $@
+WAIT_FOR_TIMEOUT=${WAIT_FOR_TIMEOUT:-600}
+
+if [[ "$CONTRACT_MIGRATION_URL" ]]; then
+  echo "waiting for $CONTRACT_MIGRATION_URL/readyz"
+  ./wait-for-it.sh $CONTRACT_MIGRATION_URL  -t $WAIT_FOR_TIMEOUT 
+  source ./get_readyz.sh # set env vars form endpoint
+  /usr/local/bin/cic-eth-trackerd $@
+else
+  /usr/local/bin/cic-eth-trackerd $@
+fi