img
A standalone, daemon-less, unprivileged container image builder compatible with Dockerfiles and OCI.
What is img?
img is a standalone command-line tool for building container images from Dockerfiles without requiring Docker daemon or root privileges. It solves the problem of secure and efficient image building in environments where users lack administrative access, such as HPC clusters or corporate LDAP systems. By using BuildKit internally, it offers better cache efficiency and concurrent build execution compared to traditional Docker builds.
Developers and system administrators working in multi-user environments, academic institutions, or high-performance computing (HPC) clusters where root access is restricted. It's also suitable for CI/CD pipelines seeking a lightweight, daemon-less image builder.
Developers choose img over Docker Build for its ability to run unprivileged, eliminating security concerns and administrative overhead. Its daemon-less design and BuildKit integration provide faster, cache-optimized builds with concurrent stage execution, all while maintaining full Docker CLI compatibility.
Overview
Standalone, daemon-less, unprivileged Dockerfile and OCI compatible container image builder.
Use Cases
Best For
- Building container images in environments without root access
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