What is Container
- First of all we have to have a Container Image, Container through image that is created;
- Container original Image is above the newly added layer, referred to as Layer Container, which is readable and writable layer (Image is read-only);
- In object-oriented programming languages, the concept of class with the object. Class is abstract, the object class is a concrete implementation. Image Container can be compared with the object with the object-oriented class, an abstract class is equivalent to Image, Container equivalent Specific examples of the object;
- Image of Container duties with distinction: Image APP is responsible for the storage and distribution, Container responsible for running APP .
Suppose we install MySQL on Docker, created a mysql container:
The figure we can visually see the relationship between the Image and the Container:
Images corresponding to a folder that contains many Container (container), Container specific object.
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