render.yaml

services:
  # Backend service - Using Python runtime for full build and start command support
  - type: web
    name: backdoor-ai-backend
    env: python
    buildCommand: |
      # Install backend dependencies
      pip install -r backend/requirements.txt
      
      echo "===== BUILD STAGE (Free Tier) ====="
      # Create only the essential model directory for memory efficiency
      mkdir -p /tmp/model
      
      # Enable remote model server mode
      export USE_REMOTE_MODEL_SERVER=true
      export REMOTE_MODEL_SERVER_URL=${REMOTE_MODEL_SERVER_URL}
      export REMOTE_MODEL_SERVER_API_KEY=${REMOTE_MODEL_SERVER_API_KEY}
      
      echo "===== BUILD COMPLETE ====="
    startCommand: |
      echo "===== STARTING APPLICATION (Free Tier) ====="
      # Ensure model path is set correctly
      export MODEL_DATA_PATH=/tmp/model
      echo "MODEL_DATA_PATH set to $MODEL_DATA_PATH"
      
      # Enable remote model server for offloading model to external service
      export USE_REMOTE_MODEL_SERVER=true
      echo "Remote model server enabled for offloading model to external service"
      
      # Start the application
      cd backend
      python -m uvicorn app.main:app --host 0.0.0.0 --port $PORT
    plan: free
    envVars:
      - key: ENVIRONMENT
        value: production
      - key: LOG_LEVEL
        value: info
      # Use /tmp/model for Free Tier compatibility
      - key: MODEL_DATA_PATH
        value: /tmp/model
      # Flag to indicate we're running on Render
      - key: RUNNING_ON_RENDER
        value: "true"
      # Enable memory-saving mode to avoid redundant model copies
      - key: MINIMIZE_MEMORY_USAGE
        value: "true"
      # Enable remote model server for offloading model to external service
      - key: USE_REMOTE_MODEL_SERVER
        value: "true"
      # Remote model server URL
      - key: REMOTE_MODEL_SERVER_URL
        sync: false
      # Remote model server API key
      - key: REMOTE_MODEL_SERVER_API_KEY
        sync: false
    healthCheckPath: /