Dockerised and prepared with .env

.env.example

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+# Thinkcentre Monitor Configuration
+# Copy this file to .env and fill in your actual values
+
+# Target URL to monitor for health checks
+# This is the service URL that will be checked every CHECK_INTERVAL seconds
+TARGET_URL=http://kubernetes-service:8080
+
+# Home Assistant configuration
+# HA_URL: Base URL of your Home Assistant instance
+# Example: http://homeassistant:8123 or http://192.168.1.100:8123
+HA_URL=http://homeassistant:8123
+
+# HA_TOKEN: Long-lived access token from Home Assistant
+# To generate: Home Assistant Settings → Developer Tools → Long-Lived Access Tokens
+# REQUIRED - the script will exit if this is not set
+HA_TOKEN=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiI5MGUzZjBmZTYwMjc0NWU0YTAwOTdiOTk2MjY1MzU2YyIsImlhdCI6MTczMzQwMjEwMiwiZXhwIjoyMDQ4NzYyMTAyfQ.example_token_replace_with_yours
+
+# HA_ENTITY: Home Assistant entity ID for the power switch
+# This is the switch entity that will be toggled to power-cycle the machine
+# Example: switch.thinkcentre_power or switch.machine_reboot_relay
+HA_ENTITY=switch.thinkcentre_power
+
+# Grace period in seconds
+# When a 502 error is detected, the system waits this long for recovery
+# (useful for deployment scenarios where services may temporarily be unavailable)
+# Default: 300 (5 minutes)
+GRACE_PERIOD=300
+
+# Health check interval in seconds
+# How frequently to check the target URL
+# Default: 30 seconds
+CHECK_INTERVAL=30