docker build

Table of Contents:

  1. Command Name
  2. Description
  3. Syntax
  4. Example

Command Name: 

docker build

Description:

docker  build command builds an image from a Dockerfile.

The docker build command builds Docker images from a Dockerfile and a “context”. A build’s context is nothing but the set of files and folders specified in the PATH or URL.

Syntax:

docker build [OPTIONS] PATH | URL | -

Example:

To use the docker build command below are the steps:

1. Create Dockerfile

2. Use docker build command to create the image

Dockerfile example: 

#This is a sample Image 
FROM ubuntu 
MAINTAINER easywhatis@gmail.com 
RUN apt-get update
RUN apt-get install curl wget 
RUN apt-get install -y nginx 
CMD ["echo","Image created successfully"]

Build the image from above Dockerfile

docker  build -t my-ubuntu .     

This example specifies that the PATH is “.” and so all the files in the local directory get tard and sent to the Docker daemon.