add beaver to stack

roles/docker/templates/beaver-compose.yml.j2

@@ -0,0 +1,20 @@
+services:
+    beaverhabits:
+        container_name: beaverhabits
+        user: 1000:1000
+        environment:
+            # See the note below to find all the environment variables
+            - HABITS_STORAGE=USER_DISK # DATABASE stores in a single SQLite database named habits.db. USER_DISK option saves in a local json file.
+            - MAX_USER_COUNT=1
+        volumes:
+            - ./data:/app/.user/ # Change directory to match your docker file scheme.
+        restart: unless-stopped
+        image: daya0576/beaverhabits:latest
+
+volumes:
+  data:
+
+networks:
+  default:
+    external: true
+    name: lava