diff --git a/.env.example b/.env.example
new file mode 100644
index 0000000..128f15b
--- /dev/null
+++ b/.env.example
@@ -0,0 +1,7 @@
+# L1 Server Configuration
+
+# L2 server URL (for authentication and publishing)
+L2_SERVER=https://artdag.rose-ash.com
+
+# L2 domain for ActivityPub actor IDs (e.g., @user@domain)
+L2_DOMAIN=artdag.rose-ash.com
diff --git a/docker-compose.yml b/docker-compose.yml
index 3448e90..a2efc05 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -14,10 +14,12 @@ services:
 
   l1-server:
     image: git.rose-ash.com/art-dag/l1-server:latest
+    env_file:
+      - .env
     environment:
       - REDIS_URL=redis://redis:6379/5
       - CACHE_DIR=/data/cache
-      - L2_SERVER=http://activitypub_l2-server:8200
+      # L2_SERVER and L2_DOMAIN from .env file
     volumes:
       - l1_cache:/data/cache
     depends_on: