However, just to clarify, you don't need to have a Dockerfile to run a container.
Once the container is created and ready to run anywhere, developers can archive or share container.
In turn, Docker images are portable static components that can run on the Docker Engine. To run a Docker container, you can choose to start with a Docker file, which is a file that explicitly states everything needed to run a Docker image (for example, operating system network specifications and file locations). One of the main tools is Docker Engine, a runtime environment that allows developers to build and run containers on any development engine. However, that does not mean that all of their tools are the ultimate solution, given the intense competition and the quality of technology that is developing in the field. In addition, over the years, Docker has developed many tools to provide a "complete" platform for everything containerization related. It can run almost anywhere, from desktops to cloud environments and data centers. Compared to the second quarter of 2019, there was an average 10 percentage point (pp) increase in container usage." (State of Cloud Native Development, 2020) What is Docker?ĭocker is a widely recognized containerization platform used to develop, ship and run any application as a portable and standalone container. " The report found that 60% of backend developers worldwide are now using containers. Not everyone uses containers, but the numbers have shown a known growth over the years. In short, thanks to containers, applications can be encapsulated in independent environments and their main advantages are: scalability, faster deployment and greater consistency between environments.
This is a major problem that containers provide solutions for because they abstract software code from the host operating system, making it independent and able to run quickly anywhere without worrying about bugs or other issues. When they want to move it to a new location (for example, from Linux to Windows), the code is very vulnerable to bugs and other errors. that is, UI-intensive virtualization of applications is performed at another hypervisor level with Vagrant and others.īefore containers, developers used to code in a specific computing environment. However, keep in mind that not all software code can be designed in a microservices architecture. The container allows software code to be more portable (can be easily moved between platforms and infrastructure) and secure, as it allows developers to build and deploy consistent applications across multiple operating systems.
Therefore, any software or application in a container can be easily moved and deployed in a separate infrastructure, regardless of the operating system or infrastructure environment. What is containerization?Ĭontainerization allows developers to package software code and associated components that are required to run (such as frameworks, libraries, and other dependencies) into a single isolated container. Further, we also explain the benefits of containerization and orchestration technologies. This article explains what containerization is and how Docker and Kubernetes can complement each other. Docker and Kubernetes are two of the primary technologies in the world of containerization, but are they competing for the same goal? Not really.