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@ -50,13 +50,13 @@ You now have a complete copy of the book repository in a folder called +lnbook+.
=== Docker Containers
Many developers use a _container_, which is a type of virtual machine, to install a pre-configured operating system and application with all the necessary dependencies. Much of the Lightning software can also be installed using a container system such as _Docker_ (command +docker+) found at https://docker.com. Container installations are a lot easier, especially for those who are not used to a command-line environment.
Many developers use a _container_, which is a type of virtual machine, to install a pre-configured operating system and applications with all the necessary dependencies. Much of the Lightning software can also be installed using a container system such as _Docker_ (command +docker+) found at https://docker.com. Container installations are a lot easier, especially for those who are not used to a command-line environment.
The book's repository contains a collection of docker containers that can be used to set up a consistent development environment to practice and replicate the examples on any system. Because the container is a complete operating system that runs with a consistent configuration, you can be sure that the examples will work on your computer and not worry about dependencies, library versions or differences in configuration.
The book's repository contains a collection of docker containers that can be used to set up a consistent development environment to practice and replicate the examples on any system. Because the container is a complete operating system that runs with a consistent configuration, you can be sure that the examples will work on your computer and need not worry about dependencies, library versions or differences in configuration.
Docker containers are often optimized to be small (less disk space). However, in this book we are using containers to _standardize_ the environment and make it consistent for all readers. Furthermore, these containers are not meant to be used to run services in the background. Instead, they are meant to be used to test the examples and learn by interacting with the software. For these reasons, the containers are quite large and come with a lot of development tools and utilities. Also, the containers are built on Ubuntu, instead of the Alpine distribution (more commonly used for Linux containers), as we want to work with a distribution that is familiar to many developers rather than one that is lightweight.
Docker containers are often optimized to be small, i.e. occupy the minimum disk space. However, in this book we are using containers to _standardize_ the environment and make it consistent for all readers. Furthermore, these containers are not meant to be used to run services in the background. Instead, they are meant to be used to test the examples and learn by interacting with the software. For these reasons, the containers are quite large and come with a lot of development tools and utilities. Commonly the Alpine distribution is used for Linux containers due to their reduced size. Nonetheless, we provide containers built on Ubuntu because more developers are familiar with Ubuntu, and this familiarity is more important to us than size.
You can find the latest container definitions and build configurations in the book's repository under the +code/docker+ folder. Each container is in a separate folder beneath:
You can find the latest container definitions and build configurations in the book's repository under the +code/docker+ folder. Each container is in a separate folder as can be seen below:
//// $ tree -F --charset=asciii code
[docker-dir-list]