uCore is an OCI image of Fedora CoreOS with "batteries included". More specifically, it's an opinionated, custom CoreOS image, built daily with some common tools added in. The idea is to make a lightweight server image including commonly used services or the building blocks to host them.
Please take a look at the included modifications, and help us improve uCore if the project interests you.
The next generation Linux workstation, designed for reliability, performance, and sustainability.
Toolbx is a tool for Linux, which allows the use of interactive command line environments for software development and troubleshooting the host operating system, without having to install software on the host. It is built on top of Podman and other standard container technologies from OCI.
Toolbx environments have seamless access to the user’s home directory, the Wayland and X11 sockets, networking (including Avahi), removable devices (like USB sticks), systemd journal, SSH agent, D-Bus, ulimits, /dev and the udev database, etc..
Learn more about Toolbx in the documentation.
The official Nextcloud installation method. Nextcloud AIO provides easy deployment and maintenance with most features included in this one Nextcloud instance.
Included are:
- Nextcloud
- High performance backend for Nextcloud Files
- Nextcloud Office (optional)
- High performance backend for Nextcloud Talk and TURN-server (optional)
- Nextcloud Talk Recording-server (optional)
- Backup solution (optional, based on BorgBackup)
- Imaginary (optional, for previews of heic, heif, illustrator, pdf, svg, tiff and webp)
- ClamAV (optional, Antivirus backend for Nextcloud)
- Fulltextsearch (optional)
- Whiteboard (optional)
- Docker Socket Proxy (optional, needed for Nextcloud App API)
- Community containers
Let’s talk about Docker and Nix today. Before explaining what Nix is, if you don’t know yet, and before going into the details, I will show you a snippet similar to a Dockerfile for creating a Redis image equivalent to the one in docker hub.
The final image will be around 42mb (or 25mb) in size, compared to 177mb.
EDIT: as mentioned on HN, alpine-based images can even go around 15mb in size.
If you want to try this, the first step is to install Nix.
Learn how to use Vib to build your own images.
Dieser Artikel gibt meine Motivation für den Bau von Container-Images und die Vorgehensweise wieder und zeigt, wie ich mit Buildah meine OCI-kompatiblen Container-Images erstelle.
Es handelt sich dabei mehr um einen Erfahrungsbericht als ein Tutorial und ich erhebe keinen Anspruch auf Vollständigkeit. Das behandelte Beispiel ist jedoch zum Einstieg und zur Nachahmung für all jene geeignet, die Container ausführen können und diese gerne ohne Verwendung von Containerfiles bauen möchten.


Podman is a daemonless container engine for developing, managing, and running Open Container Initiative (OCI) containers on Linux systems. Included in Red Hat Enterprise Linux 7.6 and later, Podman lets you create and manage rootless containers, which don't require root access to be built and deployed.
Podman is an excellent alternative to Docker containers when you need increased security, unique identifier (UID) separation using namespaces, and integration with systemd.
Download the Podman Cheat Sheet and explore basic commands for managing images, containers, and container resources. You’ll learn how to:
- Work with image repositories
- Build container images
- Create and run containers
- Manage container processes and resources
- Work with a host compiler’s file system
With Red Hat Developer cheat sheets, you get essential information right at your fingertips so you can work faster and smarter. Easily learn new technologies and coding concepts and quickly find the answers you need.
containerd is available as a daemon for Linux and Windows. It manages the complete container lifecycle of its host system, from image transfer and storage to container execution and supervision to low-level storage to network attachments and beyond.
Welcome to the site for Buildah. This site features announcements and news around Buildah, and occasionally other container tooling news.
Buildah - a tool that facilitates building Open Container Initiative (OCI) container images - github
The Buildah package provides a command line tool that can be used to
- create a working container, either from scratch or using an image as a starting point
- create an image, either from a working container or via the instructions in a Dockerfile
- images can be built in either the OCI image format or the traditional upstream docker image format
- mount a working container's root filesystem for manipulation
- unmount a working container's root filesystem
- use the updated contents of a container's root filesystem as a filesystem layer to create a new image
- delete a working container or an image
- rename a local container
gVisor is a user-space kernel, written in Go, that implements a substantial portion of the Linux system surface. It includes an Open Container Initiative (OCI) runtime called runsc that provides an isolation boundary between the application and the host kernel. The runsc runtime integrates with Docker and Kubernetes, making it simple to run sandboxed containers.
gVisor takes a distinct approach to container sandboxing and makes a different set of technical trade-offs compared to existing sandbox technologies, thus providing new tools and ideas for the container security landscape.
This first release of Kata Containers completes the merger of Intel’s Clear Containers and Hyper’s runV technologies, and delivers an OCI compatible runtime with seamless integration for container ecosystem technologies like Docker and Kubernetes.




