# Install dockerfmt with Homebrew, Nix Dockerfile format and parser. a modern dockfmt. Version 0.5.4 via Homebrew; verified 2026-06-28. ## Install ```sh sudo av install brew:dockerfmt ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install dockerfmt ``` Evidence: local Homebrew formula metadata ### Linux - Nix (92%): ```sh nix profile install nixpkgs#dockerfmt ``` Evidence: nixpkgs package indexes: pkgs/by-name/do/dockerfmt/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## Package facts - **Package key:** brew:dockerfmt - **Package manager:** Homebrew - **Package manager page:** - **Version:** 0.5.4 - **Source summary:** Dockerfile format and parser. a modern dockfmt - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** MIT - **Source archive:** - **Last updated:** 2026-06-28T00:04:23Z - **Generated:** 2026-07-08T07:18:31+00:00 ## Executables - dockerfmt (cli) - dockerfmt (alias) ## Build dependencies - go ## Install behavior - Post-install hook: not defined - Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## Freshness - Page generated: 2026-07-08 - Package-manager version: 0.5.4 - Package-manager updated: 2026-06-28 - Local data: ok - Upstream repository: https://github.com/reteps/dockerfmt - Upstream latest detected: v0.5.4 (current) ## Project history and usage dockerfmt is a young, opinionated Dockerfile formatter that combines Dockerfile parsing with shell-command formatting for `RUN` instructions. ### Project history The reteps/dockerfmt repository was created in April 2025 and published its initial alpha release the next day. The README presents it as a modern successor to Jessie Frazelle's earlier `dockfmt`, built on the Moby BuildKit parser and using `shfmt` for shell fragments inside Dockerfile `RUN` steps. The project quickly moved through 0.2.x releases in April 2025 and reached 0.5.4 in June 2026. The README's feature set includes whitespace normalization, inline-comment preservation, legacy `ENV key value` conversion, deprecated `MAINTAINER` conversion to `LABEL`, heredoc support, stdin/file operation, pre-commit support, JS/WASM bindings, and a Docker image for CI. ### Adoption history Because dockerfmt is new, public adoption evidence is still thin. Its package-manager footprint is nevertheless real: Homebrew reported stable version 0.5.4, 69 installs in the previous 30 days, and 548 installs in the previous year as of June 30, 2026. Its adoption story is also a lineage story: it exists because Dockerfile formatting remained useful after `dockfmt`, while modern BuildKit syntax, shell formatting expectations, pre-commit workflows, and CI images needed a fresher implementation. ### How it is used Users run `dockerfmt Dockerfile` to print formatted output, `dockerfmt -w Dockerfile` to rewrite files, `dockerfmt -c Dockerfile` to check formatting, or pipe Dockerfiles through stdin. It can read EditorConfig properties such as `indent_size` and `insert_final_newline` when formatting files by path. ### Why package nerds care dockerfmt is package-nerd significant because formatters become part of project policy. By exposing a Go binary, Docker image, pre-commit hook, and JS/WASM bindings, it tries to make Dockerfile formatting usable from local editors, CI, JavaScript tooling, and ordinary package managers. ### Timeline - 2025: Repository created and 0.1.0-alpha initial release published. - 2025: 0.2.x releases added JavaScript release work and bug fixes. - 2026: 0.5.4 released and Homebrew formula reports stable 0.5.4. ### Related projects - dockerfmt is directly related to `dockfmt`, Moby BuildKit's Dockerfile parser, and `shfmt`. - It also fits into pre-commit and CI formatting workflows, similar to language-specific formatters such as gofmt and prettier, but for Dockerfiles. ### Sources - - - - - ## Security Notes narrow executable package without higher-risk signals. - **Geiger risk:** green / low - narrow executable package without higher-risk signals ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** dockerfmt - **Version Scheme:** 0 - **Revision:** 0 - **Head Version:** HEAD - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** head, stable ## Other Package-Manager Records - Nix - dockerfmt: normalized package name match | nixpkgs package indexes: pkgs/by-name/do/dockerfmt/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1 ## Related links - [Source-control packages](https://www.automicvault.com/pkg/source-control-tools/) - Belongs to a source-control command family. - [Terminal utility packages](https://www.automicvault.com/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Text processing packages](https://www.automicvault.com/pkg/text-processing-tools/) - Matched text, document, or structured-data processing metadata. - [Developer build packages](https://www.automicvault.com/pkg/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata. - [go](https://www.automicvault.com/pkg/brew/go/) - Build dependency declared by Homebrew. - [typstyle](https://www.automicvault.com/pkg/brew/typstyle/) - Shares av.db curated category or tags: cli, code-formatting, developer-tools, formatter, formatters. - [beautysh](https://www.automicvault.com/pkg/brew/beautysh/) - Shares av.db curated category or tags: cli, developer-tools, formatter, formatters. - [buildifier](https://www.automicvault.com/pkg/brew/buildifier/) - Shares av.db curated category or tags: cli, developer-tools, formatter, formatters. - [cljfmt](https://www.automicvault.com/pkg/brew/cljfmt/) - Shares av.db curated category or tags: cli, developer-tools, formatter, formatters. - [dfmt](https://www.automicvault.com/pkg/brew/dfmt/) - Shares av.db curated category or tags: cli, developer-tools, formatter, formatters. - [fnlfmt](https://www.automicvault.com/pkg/brew/fnlfmt/) - Shares av.db curated category or tags: cli, developer-tools, formatter, formatters. - [fourmolu](https://www.automicvault.com/pkg/brew/fourmolu/) - Shares av.db curated category or tags: cli, developer-tools, formatter, formatters. - [fprettify](https://www.automicvault.com/pkg/brew/fprettify/) - Shares av.db curated category or tags: cli, developer-tools, formatter, formatters. ## Combined YAML source View the package source record on GitHub. [combined/dockerfmt.yml](https://github.com/automic-vault/db/blob/main/combined/dockerfmt.yml) ## Sources - Nucleus package database - Geiger risk classifier - package-page enrichment - curated package history - package version freshness - av.db category and tag curation - package relationship graph - external package-manager database matches - cross-ecosystem install command graph