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hadolint

Supported Version	Language	Website
2.1.0	Dockerfile	https://hadolint.github.io/hadolint

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.

If you want to customize your hadolint analysis, create a file named .hadolint.yaml and put it into your repository.

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
root_dir	string	-
target	string, string[]	**/Dockerfile{,.*}
ignore	string, string[]	-
trusted-registry	string, string[]	-
config	string	-

target

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

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 follows:

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

See also the --ignore option.

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 follows:

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

See also the --trusted-registry option.

config

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

linter:
  hadolint:
    config: custom-hadolint.yml

See also the --config option.