Add initial configuration files and monitoring script for ESP32 integration

docker-compose.yml

@@ -0,0 +1,12 @@
+services:
+  heart-listener:
+    image: python:3.14-slim
+    container_name: uptime-heart-listener
+    restart: unless-stopped
+    env_file:
+      - .env
+    command: >
+      bash -c "pip install -r requirements.txt && python listen.py"
+    volumes:
+      - ./:/app
+    network_mode: host