I. Introduction
In today’s computer world, using containers is very popular, especially in cloud systems. [1] wrote in her book that containers are really helpful for making cloud software. They're liked because they can keep different parts of software separate, which makes it faster to put them into action. Docker1 is the main tool for making containers. Many people use it because it has a big community and lots of ready to use parts. But even though Docker is used a lot, sometimes it can have problems with security because people might forget to make it safe when they create it. It is really important to deal with these security problems because they could cause big issues. Normally, when there is a problem with software, it can be fixed quickly by the people in charge. But with containers, it is a bit harder because they are always changing. The people who make the containers might not think about security very much, assuming that someone else will take care of it later. Because of this, places like Docker Hub2 often have containers with known security issues. To fix this, some people suggested using blockchain technology to make Docker containers more secure.