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2023 | OriginalPaper | Chapter

3. Container Foundations

Author : Sean Scott

Published in: Oracle on Docker

Publisher: Apress

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Abstract

In the previous chapter, I covered some Docker terms and concepts. This chapter builds on that with more practical, hands-on examples that will help you understand Docker firsthand, how it works, and why it's grown so popular.

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Footnotes
1
A few Docker commands have origins in Unix/Linux commands for file and process management and may not be immediately obvious to Windows users. In Linux, copies files, ls lists files, lists processes, and removes files. Their Docker equivalents copy files to and from containers, list Docker objects, list containers, and remove Docker objects, respectively.
 
2
TTY means teletype and dates to the “old days” before monitors were common. If you wanted human-readable output, it was shown on a teletype, or printer!
 
3
Significant changes to a container’s filesystem can lead to increased space use in overlay filesystems. See Chapter 12 for more details.
 
4
Chapter 7 describes techniques for storing data beyond the container’s union filesystem. Saving data outside the container decouples it from the container lifecycle, allowing databases in containers access to dedicated, high-performance storage.
 
5
Source images are updated regularly, causing the sizes you’ll see in this example to vary.
 
Metadata
Title
Container Foundations
Author
Sean Scott
Copyright Year
2023
Publisher
Apress
DOI
https://doi.org/10.1007/978-1-4842-9033-0_3

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