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LoginWhat is a Docker image? How are they shared and accessed?
Devops Devops in Devops . 2 years ago
+10 pts
A developer writes code instructions to define all the applications and its dependencies in a file CALLED a “Dockerfile”.Dockerfile is used to create a ‘Docker image’ using the ‘docker build <directory>’ command.The build command is run by the docker daemon.
When you run a Docker image “Containers” are created. Containers are runtime instances of a Docker image.
- A Container can have MANY images.
- Docker containers are stored in a docker registry on docker host.
- Docker has a client-Server architecture.
- Docker registry is generally pushed and shared on a Docker hub (REMOTE server).
Image CREDIT: docs.docker.com
- Other developers ‘Docker pull’ these registry images and create containers in their own environment.
- Developers can run their applications in the same docker container as their peers.
- This way you can get the same test environment on different servers with the same applications and dependencies.
Posted on 31 May 2022, this text provides information on Devops related to Devops in Devops. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.
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