diff --git a/docker-compose.yml b/docker-compose.yml
index 09a419d..506676d 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -4,9 +4,12 @@ services:
     ports:
       - "8000:8000"
     env_file:
-      - .env
+      # Absolute path, deliberately outside this repo checkout: the stack
+      # manager re-clones this directory fresh on every deploy, which would
+      # silently wipe a .env (or bind-mounted data) placed inside it.
+      - /Users/davidlawler/docker/power-compare-data/.env
     environment:
       - DB_PATH=/data/power_compare.db
     volumes:
-      - ./data:/data
+      - /Users/davidlawler/docker/power-compare-data/data:/data
     restart: unless-stopped