Layerfiles, Dockerfiles that build VMs
Hey HN, I’m excited to show you Layerfiles, an OSS project which gives you a single binary to build microvms using a syntax that looks like a Dockerfile. The project is currently in alpha, but it’s already able to build a VM on Linux hosts. MicroVMs are like containers, but have several upsides: - They can run on any OS, so you don’t need to run a wrapper VM like Docker Desktop does. - They also let you keep processes running during a build (RUN BACKGROUND), so you can run a webserver or build server in the background. - You can generally run them rootless without any extra configuration.…
Layerfiles, Dockerfiles that build VMs launched on October 2, 2022 with 10 votes, #1,206 of 3,153 launches that month and more than 75% of that year's launches.
In plain words
Layerfiles is an open-source tool that builds lightweight virtual machines using Dockerfile-like syntax. It runs as a single binary on Linux and allows developers to construct microvms that work across any operating system without requiring wrapper VMs like Docker Desktop. The tool supports background processes during builds, enabling users to run web servers or build servers simultaneously, and can operate rootless without additional configuration. Currently in alpha, Layerfiles offers an alternative to containers with greater portability and flexibility.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hey HN, I’m excited to show you Layerfiles, an OSS project which gives you a single binary to build microvms using a syntax that looks like a Dockerfile. The project is currently in alpha, but it’s already able to build a VM on Linux hosts. MicroVMs are like containers, but have several upsides: - They can run on any…
Does a similar job
all alternatives →
Slim – Build and run tiny VMs from Dockerfiles2019 · github.com · ▲389Build and run tiny vms from Dockerfiles. Small and sleek. - ottomatica/slim
Slim 2: Create VM from Dockerfile, boots in seconds (+macOS M1/Hyper-V)2022 · github.com · ▲59Build and run tiny vms from Dockerfiles. Small and sleek. - GitHub - ottomatica/slim at 2.x
Sub-millisecond VM sandboxes using CoW memory forkingMar 2026 · github.com · ▲311I wanted to see how fast an isolated code sandbox could start if I never had to boot a fresh VM. So instead of launching a new microVM per execution, I boot Firecracker once with Python and numpy already loaded, then snapshot the full VM state. Every execution after that creates a new KVM VM backed by a `MAP_PRIVATE` mapping of the snapshot memory, so Linux gives me copy-on-write pages automatically. That means each sandbox starts from an already-running Python process inside a real VM, runs the code, and exits. These are real KVM VMs, not containers: separate guest kernel, separate guest…
krunvm – Create and run lightweight VMs from OCI images2021 · github.com · ▲82Create microVMs from OCI images. Contribute to slp/krunvm development by creating an account on GitHub.

ByteNite2025 · docs.bytenite.com · ▲206Hi HN, I’m one of the creators of ByteNite (https://bytenite.com). We built it for developers running compute-heavy containerized workloads (AI, ETL, batch jobs) who are frustrated with the limitations of traditional serverless platforms: timeouts, cold starts, orchestration complexity, and limited runtime control. ByteNite is a serverless platform that lets you submit distributed jobs packaged as Docker containers. You define simple or complex fan-out/fan-in logic, set your hardware requirements, and we handle the rest—distributing execution across warm cloud runners (CPUs,…
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Source: Show HN post ↗ · launch text quoted in part
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