Which command is used to create a new Docker image?(1 Point)docker builddocker pulldocker rundocker commit

Break Down the Problem

1. Identify the purpose of the commands given in the options related to Docker.
2. Determine which command specifically creates a new Docker image.

Relevant Concepts

• Docker Commands:
  • docker build: This command is used to create a new Docker image from a Dockerfile and its context.
  • docker pull: This command downloads an image from a Docker registry (like Docker Hub) to your local machine.
  • docker run: This command creates and starts a container from an image.
  • docker commit: This command creates a new image from changes made to an existing container.

Analysis and Detail

• When you want to create a new Docker image, the most relevant command is docker build. This command processes the instructions in a Dockerfile and packages the application and its dependencies into an image.
• While docker commit can also be used to create a new image by capturing the state of a container, it is a less common practice because it doesn't take a defined set of instructions from a Dockerfile; instead, it makes a snapshot of the current state of a container.
• On the other hand, docker pull and docker run do not create new images but either download existing images or create containers.

Verify and Summarize

The primary command for creating new Docker images in a structured manner is docker build, as it ensures the image is built consistently from the instructions specified in a Dockerfile.

Final Answer

The command used to create a new Docker image is: docker build.