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--- docker:things_to_know_about_docker [2019/11/27 01:26] – removed peter
+++ docker:things_to_know_about_docker [2020/07/15 09:30] (current) – external edit 127.0.0.1
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+====== Docker - Things to know about Docker ======
+Here the basic terms in the docker world that you should know.
+===== Docker Images =====
+A Docker image is the basic template for a Docker container.
+An image usually contains the OS and applications that readily installed.
+The Docker image is used to run the container, you can find many images with a variety of operating systems and software that has been installed in the Docker Hub https://hub.docker.com/.
+----
+===== Docker Container =====
+Docker Container is an image which can be read and written to that runs on top of the Docker image.
+Docker is using the union-file-system as backend for the container, any changes that are made in the container will be saved in a new layer above the base image.
+The container is the layer where we install applications in. Each container that runs isolated in the host machine and therefore, provides a secure application platform.
+----
+===== Docker Registry =====
+Docker registry is a repository for Docker images.
+It provides public and private repositories.
+The public Docker registry is called the Docker Hub. Here we can push and pull our own images.