Fix container image list formatting

[YarivLevy81]

Description of changes:

Current echo missing the -e flag making the cli render it incorrectly:

▶ Available Containers

  \033[0;36m0)\033[0m nova-sft
     708977205387.dkr.ecr.us-east-1.amazonaws.com/nova-fine-tune-repo:SM-HP-SFT-latest

  \033[0;36m1)\033[0m nova-dpo
     708977205387.dkr.ecr.us-east-1.amazonaws.com/nova-fine-tune-repo:SM-HP-DPO-latest

  \033[0;36m2)\033[0m nova-ppo
     078496829476.dkr.ecr.us-west-2.amazonaws.com/nova-fine-tune-repo:HP-PPO-latest

  \033[0;36m3)\033[0m nova-cpt
     078496829476.dkr.ecr.us-west-2.amazonaws.com/nova-fine-tune-repo:HP-CPT-latest

  \033[0;36m4)\033[0m nova-eval
     708977205387.dkr.ecr.us-east-1.amazonaws.com/nova-evaluation-repo:SM-HP-Eval-latest