AWS ECS tasks errors

• Error: error creating MyECSServiceName service
• is unable to consistently start tasks successfully
• Essential container in task exited
• Resourceinitializationerror: unable to pull secrets or registry auth
• exec format error
• Is already using a port required by your task.

Amazon ECS, Service, Tasks (Task overview), capacity providers, Cluster Auto Scaling (CAS), aws ecs, ecs-cli, ~/.ecs/config, AWS Copilot, AWS Fargate, AWS CloudWatch Container Insights, /etc/ecs/ecs.config, Security group (SG), container agent, task definition, Amazon ECS events, best practices, Amazon ECS Exec Checker, Amazon ECS Agent, Service Connect, AWSServiceRoleForECS, Terraform ECS, AWS ECS Rolling deployments