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f30_buildah [2019/03/30 15:09] – rpjdayf30_buildah [2019/04/03 08:23] (current) – [Basics] rpjday
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   * [[https://opensource.com/article/18/6/getting-started-buildah|Getting started with Buildah]]   * [[https://opensource.com/article/18/6/getting-started-buildah|Getting started with Buildah]]
   * [[https://www.zdnet.com/article/buildah-1-0-linux-container-construction-made-easy/|​Buildah 1.0: Linux Container construction made easy]]   * [[https://www.zdnet.com/article/buildah-1-0-linux-container-construction-made-easy/|​Buildah 1.0: Linux Container construction made easy]]
 +  * [[https://www.softwarefactory-project.io/software-factory-container-with-buildah-and-podman.html|Software Factory Container With Buildah And Podman]]
 +  * [[https://opensource.com/article/18/5/containers-buildah|Creating small containers with Buildah]]
 +
 +===== Basics =====
 +
 +''buildah'' sits on top of:
 +
 +  * OCI containers/image project (copy, push, pull, inspect images)
 +  * OCI containers/storage project (store FS layers, images and containers)
 +
 +''buildah'' can build images from any of:
 +
 +  * existing images
 +  * scratch
 +  * Dockerfiles
 +
 +Available commands:
 +
 +<code>
 +  add                    Add content to the container
 +  build-using-dockerfile Build an image using instructions in a Dockerfile
 +  commit                 Create an image from a working container
 +  config                 Update image configuration settings
 +  containers             List working containers and their base images
 +  copy                   Copy content into the container
 +  from                   Create a working container based on an image
 +  help                   Help about any command
 +  images                 List images in local storage
 +  info                   Display Buildah system information
 +  inspect                Inspect the configuration of a container or image
 +  mount                  Mount a working container's root filesystem
 +  pull                   Pull an image from the specified location
 +  push                   Push an image to a specified destination
 +  rename                 Rename a container
 +  rm                     Remove one or more working containers
 +  rmi                    Remove one or more images from local storage
 +  run                    Run a command inside of the container
 +  tag                    Add an additional name to a local image
 +  umount                 Unmount the root file system of the specified working containers
 +  unshare                Run a command in a modified user namespace
 +  version                Display the Buildah version information
 +</code>
 +
 +===== Build container from existing image =====
 +
 +Delete all existing containers and check:
 +
 +<code>
 +$ buildah rm --all
 +$ buildah containers
 +CONTAINER ID  BUILDER  IMAGE ID     IMAGE NAME                       CONTAINER NAME
 +$
 +</code>
 +
 +Build from Fedora image and verify:
 +
 +<code>
 +$ fc=$(buildah from fedora)
 +$ echo ${fc}
 +fedora-working-container
 +$
 +</code>
 +
 +Run:
 +
 +<code>
 +$ buildah run $fc bash
 +#
 +</code>
 +
 +===== Running command in container =====
 +
 +<code>
 +$ buildah run ${fc} cat /etc/os-release
 +</code>
 +===== Building containers from scratch =====
 +
 +<code>
 +$ sc=$(buildah from scratch)
 +$ buildah containers
 +CONTAINER ID  BUILDER  IMAGE ID     IMAGE NAME                       CONTAINER NAME
 +6935a1961a34     *     d09302f77cfc docker.io/library/fedora:latest  fedora-working-container
 +4dd92fc19b8a     *                  scratch                          working-container
 +$
 +</code>
  • f30_buildah.1553958568.txt.gz
  • Last modified: 2019/03/30 15:09
  • by rpjday