What other containers are there besides Docker?

THE BASICS: 7 Alternatives to Docker: All-in-One Solutions and Standalone Container Tools

• Artifactory Docker Registry.
• LXC (Linux)
• Hyper-V and Windows Containers.
• rkt (works with Kubernetes)
• Podman (open-source container engine)
• runC (portability solution)
• containerd (a container runtime)

Is there any alternative of Docker?

Containerd. Containerd is a high-level container runtime that runs runc under the hood to provide an interface between the OS and container engines. This makes Containerd a handy orchestrator tool just like Kubernetes, and as a result, is one of the most popular Docker alternatives.

Is Docker the only container technology?

That’s not the case anymore though and Docker is not the only, but rather just another container engine on the landscape. Docker allows us to build, run, pull, push or inspect container images, but for each of these tasks there are other alternative tools, which might just do better job at it than Docker.

What are container based technologies?

Container technology, also simply known as just a container, is a method to package an application so it can be run, with its dependencies, isolated from other processes.

Are containers immutable?

Container Security and Immutability Docker containers are in fact immutable. This means that a running container never changes because in case you need to update it, the best practice is to create a new container with the updated version of your application and delete the old one.

What is a Kubernetes sidecar?

In Kubernetes, a pod is a group of one or more containers with shared storage and network. A sidecar is a utility container in a pod that’s loosely coupled to the main application container. It was only a nominal distinction, and sidecar containers were basically regular containers in a pod.