install

Additional install commands

macOS

Homebrewverified · 100%

brew install diffoci

local Homebrew formula metadata

Linux

Nixverified · 92%

nix profile install nixpkgs#diffoci

nixpkgs package indexes · pkgs/by-name/di/diffoci/package.nix · source: api.github.com

Arch Linux pacmanverified · 92%

sudo pacman -S diffoci

Arch Linux sync databases · diffoci · source: geo.mirror.pkgbuild.com

overview

Package summary

Diff for Docker and OCI container images

Project links

Commands and aliases

diffoci

history

Project history and usage

diffoci is a command-line comparison tool for Docker and OCI container images, aimed at finding the practical differences between two image artifacts in reproducible-builds work.

Project history

The project lives under the reproducible-containers organization and frames itself as a diff tool for Docker and OCI images. Its README presents strict comparison as the baseline and semantic comparison as the more useful mode for image reproducibility checks.

Adoption history

The official README documents binary releases for Linux and macOS, installation through mise, and source installation with Go, which places diffoci in the familiar package-manager and single-binary CLI lane for container tooling.

How it is used

Typical use compares two image references with `diffoci diff IMAGE0 IMAGE1`; the README recommends `--semantic` when timestamp, layer ordering, build history, or image-name annotation noise would make strict output too noisy. It can also compare local Docker or Podman images with `docker://` and `podman://` prefixes and can dump differing files to a report directory.

Why package nerds care

For package maintainers and reproducible-builds people, diffoci fills the gap between byte-level archive comparison and the layered, metadata-heavy world of OCI images. It is useful when the artifact being packaged is not a tarball or binary but a container image with registry, platform, and layer semantics.

Timeline

2023: README examples focus on comparing Alpine and Docker Hub images in reproducibility investigations.
2020s: Project distributed as a Go CLI with Linux and macOS binary releases.

Related projects

diffoci is adjacent to diffoscope for deep artifact comparison, but specializes in Docker and OCI image layout, containerd, Docker, Podman, and registry workflows.

Sources

security posture

Risk level: orange

broad file, network, media, or database tool signal. infrastructure mutation or orchestration signal.

Risk classifier

orange risk · medium confidence · infrastructure

Why

broad file, network, media, or database tool signal
infrastructure mutation or orchestration signal

Signals

text:container
text:image

Install behavior

No Homebrew post-install hook is recorded in formula metadata.
Homebrew bottle metadata is available for 6 platform targets.
Build metadata lists 1 build dependencies.

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
`diffoci`	cli	global executable

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 generated2026-07-08

manager version0.1.8

manager updated

local dataok

upstreamcurrent

latest detectedv0.1.8

https://github.com/reproducible-containers/diffoci

infoNo package-manager update timestamp was available.low confidence

install metadata

Package metadata

Package key	brew:diffoci
Version	0.1.8
Package manager	Homebrew
Package manager page	https://formulae.brew.sh/formula/diffoci
Homepage	https://github.com/reproducible-containers/diffoci
Repository	https://github.com/reproducible-containers/diffoci
Upstream docs	https://github.com/reproducible-containers/diffoci#readme
License	Apache-2.0
Source archive	https://github.com/reproducible-containers/diffoci/archive/refs/tags/v0.1.8.tar.gz
Build dependencies	go
Bottle	available (on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux)
Homebrew post-install	not defined
Service	none declared

registry facts

Source database details

Source Database	Homebrew formula API
Tap	homebrew/core
Full Name	diffoci
Version Scheme	0
Revision	0
Head Version	HEAD
Bottle Stable Root URL	https://ghcr.io/v2/homebrew/core
Deprecated	no
Disabled	no
Keg Only	no
URL Keys	head stable

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%

diffoci

nix profile install nixpkgs#diffoci

normalized package name match
Matched by: Diffoci

nixpkgs package indexes · api.github.com · nixpkgs package indexes: pkgs/by-name/di/diffoci/package.nix from https://api.github.com/repos/NixOS/nixpkgs/git/trees/master?recursive=1

pacman95%

diffoci 0.1.8-1

diff for Docker and OCI container images

https://github.com/reproducible-containers/diffoci

sudo pacman -S diffoci

License: Apache-2.0
Architecture: x86_64
1 dependencies
normalized package name match
Matched by: Diffoci

Arch Linux sync databases · geo.mirror.pkgbuild.com · Arch Linux sync databases: diffoci from https://geo.mirror.pkgbuild.com/extra/os/x86_64/extra.db.tar.gz

package graph

Links come from deterministic package relationships, av.db category and tag curation, ecosystem matches, and package hub membership.

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.

combined/diffoci.yml

Used sources

Geiger risk classifier
Nucleus package database
av.db category and tag curation
cross-ecosystem install command graph
curated package history
external package-manager database matches
package relationship graph
package version freshness
package-page enrichment

Install diffoci with Homebrew, Nix, pacman