fix: update database and Redis host environment variables in production Docker stack

Author: dunseen

docker/compose/docker-stack.prod.yml

@@ -108,13 +108,13 @@ services:
       - FRONTEND_DOMAIN=${FRONTEND_DOMAIN}
       - BACKEND_DOMAIN=${BACKEND_DOMAIN}
       - SENTRY_DSN=${SENTRY_DSN}
-      - DATABASE_HOST=postgres
+      - DATABASE_HOST=${DATABASE_HOST}
       - DATABASE_PORT=${DATABASE_PORT}
       - DATABASE_TYPE=${DATABASE_TYPE}
       - DATABASE_USERNAME=${DATABASE_USERNAME}
       - DATABASE_PASSWORD=${DATABASE_PASSWORD}
       - DATABASE_NAME=${DATABASE_NAME}
-      - REDIS_HOST=redis
+      - REDIS_HOST=${REDIS_HOST}
       - REDIS_PORT=${REDIS_PORT}
       - MINIO_ENDPOINT=minio
       - MINIO_PUBLIC_ENDPOINT=${MINIO_PUBLIC_ENDPOINT}