Remove unused DGRAPH_RATEL_HTTP_EXTERNAL_PUBLIC_PORT environment variable
# https://dgraph.io/docs/deploy/ports-usage/
DGRAPH_ALPHA_GRPC_EXTERNAL_PUBLIC_PORT=9080
DGRAPH_ALPHA_HTTP_EXTERNAL_PUBLIC_PORT=8080
-DGRAPH_RATEL_HTTP_EXTERNAL_PUBLIC_PORT=8000
# Localstack's edge port; all Localstack services are proxied through
# this port.
