How do you implement blue-green deployment with Docker?

Blue-green deployment with Docker provides zero-downtime deployments: 1) Basic concept: Blue (Current production environment), Green (New version environment), Switch traffic from blue to green, 2) Docker Swarm implementation: docker service create --name app-green --replicas 3 myapp:v2, Test green environment, Update load balancer labels, Remove blue after verification, 3) Docker Compose with Traefik using labels for routing rules, 4) Automated deployment script: Detect current color, Deploy new version, Health check with curl, Switch traffic with label updates, Cleanup old version, 5) Load balancer configuration with nginx configs. Benefits: Zero downtime deployments, Easy rollback capability, Production testing before switch, Reduced deployment risk.