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...
In this article, the definitions of some basic networking terms are explained:
Dynamic Host Configuration Protocol (DHCP):
DHCP assigns IP addresses to devices like computers, mobiles, and laptops when they are connected to wireless networks or ethernet
Ethernet:
Ethernet is a protocol that defines the type of cables and connections used to wire switches, routers, and computers.
Hub:
Hub is a network device that transmits the information received to all the devices which are in connection with Hub
Switch:
A switch is a network device that transmits the information received to a specific computer or laptop which is connected with it.
Router:
A router is a network device that can bridge different networks, determine what traffic can flow between them, and performs functions like assigning IP addresses to computers, laptops etc.
Firewall:
Firewall is one of the functions performed by the router and it typically filters the network traffic and protects the network from attacks or interference
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