Docker is an opensource tool used for virtualization and deliver software in the form of packages called Containers. It is one of the most important tools used in networking domain. Dockerfile is a template for building the image which contains commands needed to package the software. In this post, I am going to explain the commands ADD & COPY used in Dockerfile . ADD Command: ADD command is used to copy files, directories or files from remote URLS to destination path in the image. The source paths can contain wildcards. If the destination has relative path, it is relative to the Working directory of the image. Note that source path is always relative to the Docker build context. ADD command will not support authentication. So, if there are any protected files to be added in Dockerfile building, use other tools like curl or wget Dockerfile copying Single & Multiple files, directory using ADD inst...
Docker is an open source software used to develop and deliver the software in the form of packages known as Containers. Software used for hosting containers is known as Docker Engine. Docker is written in the Go programming language. Containers are isolated from each other. Each container has its own libraries, configuration files and there are mechanisms through containers to communicate with each other. These containers are created from images which can be modified or customized based on the need. All the containers share the host operating system and hence these are light-weight. An Image from which containers are created is nothing but a package of code, libraries, environment variables and configuration files. For knowing differences between docker containers and virtual machines, click here . Here we learn how to install D ocker, build an image, create containers using the image, clearing and viewing containers i...