In Docker nomenclature, there is a distinction between an image and a container. An image is an immutable, unambiguously identifiable collection of files and metadata. A container, on the other hand, is a runtime instance of an image. There can be many container instances of the same image, each of which is mutable and has its own state.
Let's make it clear it with the help of an example. You can start a Fedora distribution in a container. To do so, you have to download and build a Fedora image. After the build, the image will be located on your machine and will contain the Fedora distribution. As we mentioned in the preceding paragraph, this image is an immutable template that can be used to start a container. When ...
