Create README for libpod

Copy the README from CRI-O and convert it for libpod.

Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

1 files changed, 230 insertions, 1 deletions

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-Under construction!
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+![KPOD logo](https://cdn.rawgit.com/kubernetes-incubator/cri-o/master/logo/crio-logo.svg)
+# libpod - library for running OCI-based containers in Pods
+
+### Status: Development
+
+## What is the scope of this project?
+
+libpod is meant to provide an library for applications lookint the user the Container Pod concept popularized by Kubernetes.
+libpod also contains a tool kpod, which allows you to manage Pods, Containers, and Container Images.
+
+At a high level, we expect the scope of libpod/kpod to the following functionalities:
+
+* Support multiple image formats including the existing Docker image format
+* Support for multiple means to download images including trust & image verification
+* Container image management (managing image layers, overlay filesystems, etc)
+* Container and POD process lifecycle management
+* Resource isolation of containers and PODS.
+
+## What is not in scope for this project?
+
+* Building container images. See Buildah
+* Signing and pushing images to various image storages.  See Skopeo.
+* Container Runtimes daemons for working with Kubernetes CRIs  See CRI-O.
+
+The plan is to use OCI projects and best of breed libraries for different aspects:
+- Runtime: [runc](https://github.com/opencontainers/runc) (or any OCI runtime-spec implementation) and [oci runtime tools](https://github.com/opencontainers/runtime-tools)
+- Images: Image management using [containers/image](https://github.com/containers/image)
+- Storage: Storage and management of image layers using [containers/storage](https://github.com/containers/storage)
+- Networking: Networking support through use of [CNI](https://github.com/containernetworking/cni)
+
+libpod is currently in active development.
+
+## Commands
+| Command                                              | Description                                                               | Demo|
+| ---------------------------------------------------- | --------------------------------------------------------------------------|-----|
+| [kpod(1)](/docs/kpod.1.md)                           | Simple management tool for pods and images                                ||
+| [kpod-attach(1)](/docs/kpod-attach.1.md)             | Instead of providing a `kpod attach` command, the man page `kpod-attach` describes how to use the `kpod logs` and `kpod exec` commands to achieve the same goals as `kpod attach`.||
+| [kpod-cp(1)](/docs/kpod-cp.1.md)                     | Instead of providing a `kpod cp` command, the man page `kpod-cp` describes how to use the `kpod mount` command to have even more flexibility and functionality.||
+| [kpod-diff(1)](/docs/kpod-diff.1.md)                 | Inspect changes on a container or image's filesystem                      |[![...](/docs/play.png)](https://asciinema.org/a/FXfWB9CKYFwYM4EfqW3NSZy1G)|
+| [kpod-export(1)](/docs/kpod-export.1.md)             | Export container's filesystem contents as a tar archive                   |[![...](/docs/play.png)](https://asciinema.org/a/913lBIRAg5hK8asyIhhkQVLtV)|
+| [kpod-history(1)](/docs/kpod-history.1.md)           | Shows the history of an image                                             |[![...](/docs/play.png)](https://asciinema.org/a/bCvUQJ6DkxInMELZdc5DinNSx)|
+| [kpod-images(1)](/docs/kpod-images.1.md)             | List images in local storage                                              |[![...](/docs/play.png)](https://asciinema.org/a/133649)|
+| [kpod-info(1)](/docs/kpod-info.1.md)                 | Display system information                                                ||
+| [kpod-inspect(1)](/docs/kpod-inspect.1.md)           | Display the configuration of a container or image                         |[![...](/docs/play.png)](https://asciinema.org/a/133418)|
+| [kpod-kill(1)](/docs/kpod-kill.1.md)                 | Kill the main process in one or more running containers                   |[![...](/docs/play.png)](https://asciinema.org/a/3jNos0A5yzO4hChu7ddKkUPw7)|
+| [kpod-load(1)](/docs/kpod-load.1.md)                 | Load an image from docker archive or oci                                  |[![...](/docs/play.png)](https://asciinema.org/a/kp8kOaexEhEa20P1KLZ3L5X4g)|
+| [kpod-login(1)](/docs/kpod-login.1.md)               | Login to a container registry	                                           |[![...](/docs/play.png)](https://asciinema.org/a/oNiPgmfo1FjV2YdesiLpvihtV)|
+| [kpod-logout(1)](/docs/kpod-logout.1.md)             | Logout of a container registry                                            |[![...](/docs/play.png)](https://asciinema.org/a/oNiPgmfo1FjV2YdesiLpvihtV)|
+| [kpod-logs(1)](/docs/kpod-logs.1.md)                 | Display the logs of a container                                           ||
+| [kpod-mount(1)](/docs/kpod-mount.1.md)               | Mount a working container's root filesystem                               ||
+| [kpod-pause(1)](/docs/kpod-pause.1.md)               | Pause one or more running containers                                      |[![...](/docs/play.png)](https://asciinema.org/a/141292)|
+| [kpod-ps(1)](/docs/kpod-ps.1.md)                     | Prints out information about containers                                   |[![...](/docs/play.png)](https://asciinema.org/a/bbT41kac6CwZ5giESmZLIaTLR)|
+| [kpod-pull(1)](/docs/kpod-pull.1.md)                 | Pull an image from a registry                                             |[![...](/docs/play.png)](https://asciinema.org/a/lr4zfoynHJOUNu1KaXa1dwG2X)|
+| [kpod-push(1)](/docs/kpod-push.1.md)                 | Push an image to a specified destination                                  |[![...](/docs/play.png)](https://asciinema.org/a/133276)|
+| [kpod-rename(1)](/docs/kpod-rename.1.md)             | Rename a container                                                        ||
+| [kpod-rm(1)](/docs/kpod-rm.1.md)                     | Removes one or more containers                                            |[![...](/docs/play.png)](https://asciinema.org/a/7EMk22WrfGtKWmgHJX9Nze1Qp)|
+| [kpod-rmi(1)](/docs/kpod-rmi.1.md)                   | Removes one or more images                                                |[![...](/docs/play.png)](https://asciinema.org/a/133799)|
+| [kpod-save(1)](/docs/kpod-save.1.md)                 | Saves an image to an archive                                              |[![...](/docs/play.png)](https://asciinema.org/a/kp8kOaexEhEa20P1KLZ3L5X4g)|
+| [kpod-stats(1)](/docs/kpod-stats.1.md)               | Display a live stream of one or more containers' resource usage statistics||
+| [kpod-stop(1)](/docs/kpod-stop.1.md)                 | Stops one or more running containers                                      ||
+| [kpod-tag(1)](/docs/kpod-tag.1.md)                   | Add an additional name to a local image                                   |[![...](/docs/play.png)](https://asciinema.org/a/133803)|
+| [kpod-umount(1)](/docs/kpod-umount.1.md)             | Unmount a working container's root filesystem                             ||
+| [kpod-unpause(1)](/docs/kpod-unpause.1.md)           | Unpause one or more running containers                                    |[![...](/docs/play.png)](https://asciinema.org/a/141292)|
+| [kpod-version(1)](/docs/kpod-version.1.md)           | Display the version information                                           |[![...](/docs/play.png)](https://asciinema.org/a/mfrn61pjZT9Fc8L4NbfdSqfgu)|
+| [kpod-wait(1)](/docs/kpod-wait.1.md)                 | Wait on one or more containers to stop and print their exit codes||
+
+## OCI Hooks Support
+
+[KPOD configures OCI Hooks to run when launching a container](./hooks.md)
+
+## KPOD Usage Transfer
+
+[Useful information for ops and dev transfer as it relates to infrastructure that utilizes KPOD](/transfer.md)
+
+## Communication
+
+For async communication and long running discussions please use issues and pull requests on the github repo. This will be the best place to discuss design and implementation.
+
+For sync communication we have an IRC channel #KPOD, on chat.freenode.net, that everyone is welcome to join and chat about development.
+
+## Getting started
+
+### Prerequisites
+
+Latest version of `runc` is expected to be installed on the system. It is picked up as the default runtime by kpod.
+
+### Build and Run Dependencies
+
+**Required**
+
+Fedora, CentOS, RHEL, and related distributions:
+
+```bash
+yum install -y \
+  btrfs-progs-devel \
+  device-mapper-devel \
+  git \
+  glib2-devel \
+  glibc-devel \
+  glibc-static \
+  go \
+  golang-github-cpuguy83-go-md2man \
+  gpgme-devel \
+  libassuan-devel \
+  libgpg-error-devel \
+  libseccomp-devel \
+  libselinux-devel \
+  ostree-devel \
+  pkgconfig \
+  runc \
+  skopeo-containers
+```
+
+Debian, Ubuntu, and related distributions:
+
+```bash
+apt-get install -y \
+  btrfs-tools \
+  git \
+  golang-go \
+  libassuan-dev \
+  libdevmapper-dev \
+  libglib2.0-dev \
+  libc6-dev \
+  libgpgme11-dev \
+  libgpg-error-dev \
+  libseccomp-dev \
+  libselinux1-dev \
+  pkg-config \
+  runc \
+  skopeo-containers
+```
+
+Debian, Ubuntu, and related distributions will also need a copy of the development libraries for `ostree`, either in the form of the `libostree-dev` package from the [flatpak](https://launchpad.net/~alexlarsson/+archive/ubuntu/flatpak) PPA, or built [from source](https://github.com/ostreedev/ostree) (more on that [here](https://ostree.readthedocs.io/en/latest/#building)).
+
+If using an older release or a long-term support release, be careful to double-check that the version of `runc` is new enough (running `runc --version` should produce `spec: 1.0.0`), or else build your own.
+
+**NOTE**
+
+Be careful to double-check that the version of golang is new enough, version 1.8.x or higher is required.  If needed, golang kits are avaliable at https://golang.org/dl/
+
+**Optional**
+
+Fedora, CentOS, RHEL, and related distributions:
+
+(no optional packages)
+
+Debian, Ubuntu, and related distributions:
+
+```bash
+apt-get install -y \
+  libapparmor-dev
+```
+
+### Get Source Code
+
+As with other Go projects, KPOD must be cloned into a directory structure like:
+
+```
+GOPATH
+└── src
+    └── github.com
+        └── projectatomic
+            └── libpod
+```
+
+First, configure a `GOPATH` (if you are using go1.8 or later, this defaults to `~/go`).
+
+```bash
+export GOPATH=~/go
+mkdir -p $GOPATH
+```
+
+Next, clone the source code using:
+
+```bash
+mkdir -p $GOPATH/src/github.com/projectatomic
+cd $_ # or cd $GOPATH/src/github.com/projectatomic
+git clone https://github.com/projectatomic/libpod # or your fork
+cd libpod
+```
+
+### Build
+
+```bash
+make install.tools
+make
+sudo make install
+```
+
+Otherwise, if you do not want to build `kpod` with seccomp support you can add `BUILDTAGS=""` when running make.
+
+```bash
+make BUILDTAGS=""
+sudo make install
+```
+
+#### Build Tags
+
+`kpod` supports optional build tags for compiling support of various features.
+To add build tags to the make option the `BUILDTAGS` variable must be set.
+
+```bash
+make BUILDTAGS='seccomp apparmor'
+```
+
+| Build Tag | Feature                            | Dependency  |
+|-----------|------------------------------------|-------------|
+| seccomp   | syscall filtering                  | libseccomp  |
+| selinux   | selinux process and mount labeling | libselinux  |
+| apparmor  | apparmor profile support           | libapparmor |
+
+### Running pods and containers
+
+Follow this [tutorial](tutorial.md) to get started with KPOD.
+
+### Setup CNI networking
+
+A proper description of setting up CNI networking is given in the
+[`contrib/cni` README](contrib/cni/README.md). But the gist is that you need to
+have some basic network configurations enabled and CNI plugins installed on
+your system.
+
+### Current Roadmap
+
+1. Basic pod/container lifecycle, basic image pull (done)
+1. Support for tty handling and state management (done)
+1. Basic integration with kubelet once client side changes are ready (done)
+1. Support for log management, networking integration using CNI, pluggable image/storage management (done)
+1. Support for exec/attach (done)