diff --git a/docker-compose.yml b/docker-compose.yml
index 3d28a3ff..326966a5 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -63,6 +63,11 @@ services:
       ZABBIX_TOKEN: ${ZABBIX_TOKEN:-}
       COLLECTOR_API_KEY: ${COLLECTOR_API_KEY:-}
       COLLECTOR_API_KEY_ENDPOINTS: ${COLLECTOR_API_KEY_ENDPOINTS:-}
+      # This file is the source-build dev stack (wilm/dev-be); stable and edge
+      # ship through the pull/airgap compose files, not this one. So default the
+      # badge label to DEV here - a raw source build is by definition not a
+      # release - while still allowing an override from .env.
+      SHOPDB_ENV_LABEL: ${SHOPDB_ENV_LABEL:-DEV}
     ports:
       - "${API_PORT:-5001}:5001"
     # Terminate TLS in gunicorn with the mounted self-signed cert so the browser