Can I have a different public IP for each docker container and launch them with SDK

I saw AWS providing a docker server.

I want to know can I reach the following conditions on any AWS service

• Could I run containers with public IP for each one.(once start a new container, then I can acquire an new IP)
• How can I run the following command in the docker service

I put my project under /home/user_a/workspace

And launch the container first, and then run the script in the container

• docker run -it --rm --name tiger -p 5901:5901 -v /home/user_a/workspace:/workspace -e USER=root user_a/ubuntu-vnc-selenium-firefox

• docker exec -d sample1 bash -c "sudo su ; cd /workspace ; ruby main.rb"