macOS
Homebrewverified · 100%
brew install dockerfmtlocal Homebrew formula metadata
brew / rank 4736
Install dockerfmt with Homebrew, Nix
Dockerfile format and parser. a modern dockfmt. Version 0.5.4 via Homebrew; verified 2026-07-28. Also installable with nix: nix profile install nixpkgs#dockerfmt.
install
Additional install commands
Linux
Nixverified · 92%
nix profile install nixpkgs#dockerfmtnixpkgs package indexes · pkgs/by-name/do/dockerfmt/package.nix · source: api.github.com
overview
Package summary
Dockerfile format and parser. a modern dockfmt
Project links
Commands and aliases
- dockerfmt
history
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 posture
Risk level: green
narrow executable package without higher-risk signals.
Risk classifier
green risk · low confidence · appliance
Why
- narrow executable package without higher-risk signals
Signals
- metadata:no-higher-risk-signals
Install behavior
- No Homebrew bottle metadata was recorded.
Recommended review
Before unattended agent use, check whether the tool reads plaintext credentials, writes remote state, publishes artifacts, or shells out to plugins.
executables
Installed executables
| Command | Kind | Exposure | Note |
|---|---|---|---|
dockerfmt | executable | indexed executable | Discovered from the local executable index. |
freshness
Version and freshness
These signals separate page generation age, package-manager activity, and upstream release comparison. Version lag is warned only when an evidence URL and comparable versions are present.
page generated2026-08-03
manager version0.5.4
manager updated2026-07-28
local dataunknown
upstreamnot available
latest detectednot detected
- okNo freshness warnings were generated.
install metadata
Package metadata
| Package key | brew:dockerfmt |
|---|---|
| Version | 0.5.4 |
| Package manager | Homebrew |
| Homepage | https://github.com/reteps/dockerfmt |
| Repository | https://github.com/reteps/dockerfmt |
| Last updated | 2026-07-28T14:10:41+02:00 |
| Pulse | updated |
| Bottle | not recorded |
| Service | none declared |
source database matches
Other package-manager records
Matches are pulled from external package-manager indexes and kept separate from local Automic Vault package links.
Nix95%
dockerfmt
nix profile install nixpkgs#dockerfmt- normalized package name match
- Matched by: Dockerfmt
source trail
Generated from repository data
This page is generated by av-web from the private package SQLite artifact built by scripts/generate-pkg-sqlite.py.
Combined YAML source
View the package source record on GitHub.
Used sources
- Geiger risk classifier
- cross-ecosystem install command graph
- curated package history
- external package-manager database matches
- pkg.so package database
- pkgdb category and tag curation