Docker container version management is an important part of ensuring application stability. Image version management: use semantic versioning (such as 1.0.0, 1.2.3), use tags to distinguish different versions (latest, stable, dev), avoid using the latest tag in production environments, use multi-stage builds to optimize images. Container update strategies: rolling updates, blue-green deployments, canary releases. Version rollback: keep old version images, use docker tag to create version tags, use docker-compose or Kubernetes for quick rollback. Best practices: use CI/CD for automated version management, record changes for each version, regularly clean up old version images, use image signing to ensure integrity.