November 2018
Beginner
230 pages
6h 4m
English
Content preview from Docker Quick Start Guide
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The difference between COPY and ADD
The answer is that the ADD instruction can actually do more than the COPY instruction. The more is dependent upon the values used for the source input. With the COPY instruction, the source can be files or folders. However, with the ADD instruction, the source can be files, folders, a local .tar file, or a URL.
When the ADD instruction has a source value that is a .tar file, the contents of that TAR file are extracted into a corresponding folder inside the image.
When you use a .tar file as the source in an ADD instruction and include the --chown parameter, you might expect the owner and group in the image to be set on the files extracted from the archive. This is currently not the way it works. Unfortunately, ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.