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hadolint

Supported Version	Language	Website
1.17.4	Dockerfile	https://github.com/hadolint/hadolint

This is BETA. The behavior of this tool might change.

hadolint is a Dockerfile linter that helps you build best practice Docker images.

Getting Started

To start using hadolint, enable it in your repository settings.

For more details for hadolint, see the command-line help:

$ hadolint --help

Configuration

Here is a configuration example via sider.yml:

linter:
  hadolint:
    target: "src/Dockerfile"
    ignore: "DL3003"
    trusted-registry: "my-company.com:500"
    config: custom-hadolint.yml

You can use the following options to fine-tune hadolint to your project.

Name	Type	Default	Description
root_dir	string	-	A root directory.
target	string, string[]	**/Dockerfile{,.*}	File paths to analyze.
ignore	string, string[]	-	--ignore option of hadolint.
trusted-registry	string, string[]	-	--trusted-registry option of hadolint.
config	string	-	--config option of hadolint.

target

This option allows you to specify files or directories to analyze. If you specify some targets, configure as follow:

linter:
  hadolint:
    target:
      - "backend/Dockerfile"
      - "images/**/Dockerfile"

ignore

This option allows you to ignore some rules from result of analysis. You can specify rules as follow:

linter:
  hadolint:
    ignore:
      - "DL3002"
      - "DL3003"

trusted-registry

This option can warn you when images from untrusted repositories are being used in Dockerfiles. If you specify some trusted repositories, configure as follow:

linter:
  hadolint:
    trusted-registry:
      - "my-company.com:500"

config

This option allow you to specify configuration file in yaml format like this example. If you specify path to configuration file, configure as follow:

linter:
  hadolint:
    config: custom-hadolint.yml