Docker Container

Docker containers are lightweight, standalone, executable packages that include everything needed to run a piece of software, including the code, a runtime, libraries, environment variables, and system tools. Containers isolate software from its environment and ensure that it works uniformly despite differences for instance between development and staging.

Downloading Images from Docker Hub

To download images from Docker Hub, use the docker pull a command followed by the name of the image. For common images like Ubuntu, MySQL, or Nginx, the command structure is as follows:

• For Ubuntu: docker pull ubuntu

• For MySQL: docker pull mysql

• For nginx: docker pull nginx

Make sure Docker is installed and running on your system before executing these commands. This will fetch the latest version of the specified image from Docker Hub to your local machine.

Here example I am pulling Ubuntu

Check Docker Images

• docker images

To run a Docker container, use the following command:

• docker run [OPTIONS] IMAGE [COMMAND] [ARG...]

- Replace `IMAGE` with the name of the Docker image you want to run.
- `OPTIONS` can be used to customize the behavior of the command (e.g., `-d` to run the container in detached mode).
- `COMMAND` and `ARG` can be specified to run a specific command inside the container.

• docker run -d ubuntu

• docker ps -a

• docker diff container_name/container_id

• docker inspect container_name/container_id

• docker stats container_name/container_id