README.md

metadata

datasets:
  - name: dockerfiles-linted
    license: cc-by-4.0
    language:
      - en
    tags:
      - dockerfile
      - hadolint
      - devops
      - github
      - software-engineering

Dockerfiles Linted Dataset

This dataset contains 195,758 Dockerfiles collected from public container images found on Docker Hub. Each Dockerfile is enriched with metadata and statically analyzed using Hadolint.

Dataset Overview

Dockerfiles were collected by:

1. Enumerating Docker Hub images,
2. Extracting raw GitHub URLs pointing to Dockerfile locations in those repositories,
3. Downloading each file and extracting content-level metadata (e.g. line count, validity),
4. Fetching GitHub-level metadata such as license, stars, and path,
5. Running Hadolint to detect Dockerfile best-practice violations.

Each data entry includes:

• Dockerfile content and metadata (hash, lines, valid),
• GitHub repository context (repo URL, license, stars, branch),
• Hadolint static analysis results.

Structure

The dataset is split into 4 progressive stages:

resolved/       → Resolved image ↔ raw Dockerfile URL mappings
enriched/       → Dockerfile content + metadata (hash, lines, valid)
full/           → Enriched with GitHub repository metadata
linted/         → Final stage with Hadolint static analysis results
summary/        → Visual summaries and statistics

Each folder contains:

• 20 partial .jsonl chunks (10k entries each),
• 1 combined *_all.jsonl file for bulk use,
• a dataset_info.json describing the data structure.

Bias Warning: CircleCI Dominance

A very large portion of the Dockerfiles originate from the circleci/circleci-dockerfiles repository (170,000+ entries).
To ensure clarity, we include two sets of visualizations:

• Full dataset statistics
• Statistics with CircleCI excluded

This allows users to explore data either globally or more evenly across repositories.

Repository Distribution

Top 20 repositories by number of Dockerfiles (entire dataset):

Top 20 repositories (excluding CircleCI):

Hadolint Rule Violations

Top 20 Hadolint rules triggered (entire dataset):

Top 20 Hadolint rules (excluding CircleCI):

Example Entry

Each row in the .jsonl files contains enriched information about a Dockerfile.
The full field structure for each stage is documented in its respective dataset_info.json.

License

This dataset is provided under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.

Attribution Notice

This dataset contains Dockerfiles originally created by developers across many public GitHub repositories.
We do not claim ownership of any individual Dockerfile.
Instead, we provide this dataset as a collection of metadata, structure, and analysis, compiled and curated for research and educational use.

Please consult individual repository licenses if you plan to reuse specific Dockerfile content in derived works.