Hadolint

hadolint

A smarter Dockerfile linter that helps you build best practice Docker images.

Runs as hadolint|macOS, Linux, Windows|github.com

Open form in Otty otty.toml

Command form

ai-draft · 2 tasks · 10 fields

Lint one or more Dockerfiles with a chosen output format and failure threshold. Per-rule severity overrides, label schemas and registries are left out.

Opens the form; the finished command lands at your prompt, unrun

Run in Otty

otty gui hadolint

Lint DockerfilesExample values, fixed in this page — nothing here reaches a terminal

Basic

Dockerfiles*

file

TasksEach one presets the form for one job

Lint a Dockerfile

dockerfile

JSON report

dockerfileformat

ParametersOnly these flags are editable in the form

Dockerfiles

path · positional 0 · repeatable

Config file

path

--config-c

Output format

enum

--format-fttyjsoncheckstylecodeclimategitlab_codeclimategnucodacysonarqubesarifjunit

Failure threshold

enum

--failure-threshold-terrorwarninginfostyleignorenone

Ignore rules

Rule codes such as DL3008.
string · repeatable

--ignore

Never fail the exit code

boolean

--no-fail

No color

boolean

--no-color

Trusted registries

string · repeatable

--trusted-registry

Strict labels

boolean

--strict-labels

Disable inline ignore pragmas

boolean

--disable-ignore-pragma

SourcesEvery flag above is checked against these

help

Usage: hadolint [-v|--version] [-c|--config FILENAME] [DOCKERFILE...] -c,--config FILENAME Path to the configuration file --no-fail Don't exit with a failure status code when any rule is violated --no-color Don't colorize output -f,--format ARG The output format for the results [tty…

helpmaster 2026-10

github.com

Before it fills your prompt, Otty checks the installed hadolint against its version. A form that does not match your version is not offered.