Docker helps in containerizing applications, ensuring consistent environments across development, testing, and production. This reduces issues related to dependency management and environment setup.

Docker has revolutionized the way developers approach full stack development by introducing containerization, which simplifies application deployment and management. The primary purpose of using Docker is to package applications and their dependencies into containers, ensuring that they run consistently across different environments—whether in development, testing, or production. This addresses one of the most common issues developers face: the 'it works on my machine' problem, where applications behave differently due to discrepancies in their environments. With Docker, developers can create an isolated environment that includes everything the application needs to run, including libraries, configuration files, and environment variables. This significantly reduces the complexity of managing dependencies and setup processes. Additionally, Docker facilitates rapid deployment and scaling of applications; containers can be spun up or down quickly based on demand. It also enhances collaboration among team members, as developers can share container images, ensuring that everyone is working with the same environment. By leveraging Docker in full stack development, teams can achieve greater consistency, reliability, and efficiency in their workflows.