feat(RECIPE-0003): complete iteration 0 — update icon and add docker deployment

.env.example

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+# ==============================================================================
+# InstaRecipe - Environment Configuration
+# ==============================================================================
+# Copy this file to .env and update with your values
+# Some variables have sensible defaults and are optional
+
+# ==============================================================================
+# LLM Configuration (REQUIRED)
+# ==============================================================================
+# OpenAI-compatible API endpoint (OpenAI, LM Studio, Ollama, LiteLLM, etc.)
+OPENAI_BASE_URL=http://localhost:1234/v1
+
+# API key for authentication
+OPENAI_API_KEY=your-api-key-here
+
+# Model to use for recipe extraction
+# Examples: gpt-4o, gpt-4o-mini, llama-3.1, mistral, etc.
+LLM_MODEL=gpt-4o
+
+# ==============================================================================
+# Queue Configuration (OPTIONAL)
+# ==============================================================================
+# Number of recipes to process simultaneously (default: 2)
+QUEUE_CONCURRENCY=2
+
+# Maximum retry attempts for failed extractions (default: 3)
+QUEUE_MAX_RETRIES=3
+
+# ==============================================================================
+# Tandoor Integration (OPTIONAL)
+# ==============================================================================
+# Enable automatic upload to Tandoor Recipe Manager
+TANDOOR_ENABLED=false
+
+# Tandoor server URL (no trailing slash)
+TANDOOR_SERVER_URL=https://tandoor.example.com
+
+# Tandoor space ID (default: 1)
+TANDOOR_SPACE=1
+
+# Tandoor API token (generate in Tandoor settings)
+TANDOOR_TOKEN=your-tandoor-token-here
+
+# ==============================================================================
+# Push Notifications (OPTIONAL)
+# ==============================================================================
+# Web Push VAPID keys for browser notifications
+# Generate with: npx web-push generate-vapid-keys
+# Default keys are provided for testing but should be changed in production
+
+# VAPID Public Key
+VAPID_PUBLIC_KEY=BNextdcB_fQ0BVvyGioM5L8Tf9vKQjs-WnF-rUbnU8MdWIZQYfggIHxBnW21I-lq_0HykLCdMpYj8d5joavWdxQ
+
+# VAPID Private Key
+VAPID_PRIVATE_KEY=JwxI_KcsBcehYcTOufMcbVWJjCq1QbH5FJmSyQuG680
+
+# ==============================================================================
+# Authentication Scheduler (OPTIONAL)
+# ==============================================================================
+# Enable automatic Instagram authentication renewal
+AUTH_SCHEDULER_ENABLED=false
+
+# Renewal interval in minutes (default: 720 = 12 hours)
+AUTH_SCHEDULER_INTERVAL_MINUTES=720
+
+# ==============================================================================
+# Development Settings
+# ==============================================================================
+# Node.js environment (production or development)
+NODE_ENV=production
+
+# Port for the application (default: 3000)
+PORT=3000