Docker

# docker-compose.yml
services:
  otel-collector:
    image: otel/opentelemetry-collector-contrib:latest
    volumes:
      - ./otel-config.yaml:/etc/otelcol-contrib/config.yaml
      - /var/lib/docker/containers:/var/lib/docker/containers:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
    ports:
      - "4317:4317" # gRPC
      - "4318:4318" # HTTP
    restart: unless-stopped

  # Your existing services...
  web:
    image: your-app
    logging:
      driver: json-file # Default Docker logging driver

# otel-config.yaml
receivers:
  filelog/docker:
    include:
      - /var/lib/docker/containers/*/*.log
    operators:
      - type: json_parser
        timestamp:
          parse_from: attributes.time
          layout: "%Y-%m-%dT%H:%M:%S.%LZ"
      - type: move
        from: attributes.log
        to: body
      - type: move
        from: attributes.stream
        to: attributes["log.iostream"]

  otlp:
    protocols:
      grpc:
        endpoint: 0.0.0.0:4317
      http:
        endpoint: 0.0.0.0:4318

exporters:
  otlphttp/squasher:
    endpoint: https://ingest.squasher.ai
    headers:
      x-squasher-key: "sq_pk_your_api_key"

processors:
  batch:
    timeout: 5s
    send_batch_size: 100

service:
  pipelines:
    logs:
      receivers: [filelog/docker, otlp]
      processors: [batch]
      exporters: [otlphttp/squasher]
    traces:
      receivers: [otlp]
      processors: [batch]
      exporters: [otlphttp/squasher]

docker compose up -d

Configure Docker logs for Squasher project <project_id>. Add or update the OpenTelemetry Collector config, keep the x-squasher-key value in environment or secret storage, run the collector config validation if available, and verify with one container error log.