diff --git a/stack_orchestrator/data/compose/docker-compose-go-nitro-auth.yml b/stack_orchestrator/data/compose/docker-compose-go-nitro-auth.yml
index cf6e483f..1ed542f8 100644
--- a/stack_orchestrator/data/compose/docker-compose-go-nitro-auth.yml
+++ b/stack_orchestrator/data/compose/docker-compose-go-nitro-auth.yml
@@ -93,6 +93,9 @@ services:
   nitro-caddy:
     image: caddy:2-alpine
     restart: always
+    environment:
+      CERC_ETH_RPC_ENDPOINT: ${CERC_ETH_RPC_ENDPOINT:-http://fixturenet-eth-geth-1:8545}
+      CERC_NITRO_CHAIN_URL: ${CERC_NITRO_CHAIN_URL:-ws://fixturenet-eth-geth-1:8546}
     volumes:
       - ../config/go-nitro-auth/caddy/Caddyfile:/etc/caddy/Caddyfile
     ports: