November 2017
Intermediate to advanced
298 pages
7h 10m
English
Content preview from Deployment with Docker
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Labels
Our first new directive here is LABEL:
LABEL version="1.0"LABEL org.sgnn7.name="python-webserver"
LABEL <key>=<value> or LABEL <key> <value> is used to add metadata about the image that is being built, which can later be examined and filtered by docker ps and docker images using something like docker images --filter "<key>=<value>". Keys are generally all lowercase in the reverse-dns notation, but you can use anything you want here and version should be present on every image, so we use the top-level version key name. However, the version here is not only there so that we can filter images but also to break Docker's cache if we change it. Without cache-busting of this sort or through the manually set flag during builds ( docker build ...
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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.