(VDB-560) Rename lightSync to headerSync

dockerfiles/startup_script.sh

@@ -1,5 +1,5 @@
 #!/bin/sh
-# Runs the migrations and starts the lightSync and continuousLogSync services
+# Runs the migrations and starts the headerSync and continuousLogSync services
 
 # Exit if the variable tests fail
 set -e
@@ -21,7 +21,7 @@ set +e
 ./goose postgres "$CONNECT_STRING" up
 if [ $? -eq 0 ]; then
   # Fire up the services
-  ./vulcanizedb lightSync --config environments/staging.toml &
+  ./vulcanizedb headerSync --config environments/staging.toml &
   ./vulcanizedb continuousLogSync --config environments/staging.toml &
 else
   echo "Could not run migrations. Are the database details correct?"