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Merge pull request #1449 from Rick-Anderson/patch-3 

Update faq.md
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Misty Stanley-Jones 2017-02-03 11:13:22 -08:00 committed by GitHub
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@ -22,7 +22,7 @@ We are using the Apache License Version 2.0, see it here:
[https://github.com/docker/docker/blob/master/LICENSE]( [https://github.com/docker/docker/blob/master/LICENSE](
https://github.com/docker/docker/blob/master/LICENSE) https://github.com/docker/docker/blob/master/LICENSE)
### Does Docker run on macOS or Windows? ### Does Docker run on Linux, macOS, or Windows?
The Docker Engine client runs natively on Linux, macOS, and Windows. By default, these The Docker Engine client runs natively on Linux, macOS, and Windows. By default, these
clients connect to a local Docker daemon running in a virtual environment managed clients connect to a local Docker daemon running in a virtual environment managed
@ -45,23 +45,23 @@ Containers and virtual machines (VMs) are complementary. VMs excel at providing
### What does Docker technology add to just plain LXC? ### What does Docker technology add to just plain LXC?
Docker technology is not a replacement for LXC. "LXC" refers to capabilities of Docker technology is not a replacement for [LXC](https://linuxcontainers.org/). "LXC" refers to capabilities of
the Linux kernel (specifically namespaces and control groups) which allow the Linux kernel (specifically namespaces and control groups) which allow
sandboxing processes from one another, and controlling their resource sandboxing processes from one another, and controlling their resource
allocations. On top of this low-level foundation of kernel features, Docker allocations. On top of this low-level foundation of kernel features, Docker
offers a high-level tool with several powerful functionalities: offers a high-level tool with several powerful functionalities:
- *Portable deployment across machines.* Docker defines a format for bundling - *Portable deployment across machines.* Docker defines a format for bundling
an application and all its dependencies into a single object which can be an application and all its dependencies into a single object called a container. This container can be
transferred to any Docker-enabled machine, and executed there with the transferred to any Docker-enabled machine. The container can be executed there with the
guarantee that the execution environment exposed to the application will be the guarantee that the execution environment exposed to the application will be the
same. LXC implements process sandboxing, which is an important pre-requisite same in development, tesing, and production. LXC implements process sandboxing, which is an important pre-requisite
for portable deployment, but that alone is not enough for portable deployment. for portable deployment, but is not sufficient for portable deployment.
If you sent me a copy of your application installed in a custom LXC If you sent me a copy of your application installed in a custom LXC
configuration, it would almost certainly not run on my machine the way it does configuration, it would almost certainly not run on my machine the way it does
on yours, because it is tied to your machine's specific configuration: on yours. The app you sent me is tied to your machine's specific configuration:
networking, storage, logging, distro, etc. Docker defines an abstraction for networking, storage, logging, etc. Docker defines an abstraction for
these machine-specific settings, so that the exact same Docker container can these machine-specific settings. The exact same Docker container can
run - unchanged - on many different machines, with many different run - unchanged - on many different machines, with many different
configurations. configurations.