[StepSecurity] Apply security best practices

[step-security-bot]

Summary

This pull request is created by Secure Repo at the request of @jmrplens. Please merge the Pull Request to incorporate the requested changes. Please tag @jmrplens on your message if you have any questions related to the PR. You can also engage with the StepSecurity team by tagging @step-security-bot.

Security Fixes

Least Privileged GitHub Actions Token Permissions

The GITHUB_TOKEN is an automatically generated secret to make authenticated calls to the GitHub API. GitHub recommends setting minimum token permissions for the GITHUB_TOKEN.

• GitHub Security Guide
• The Open Source Security Foundation (OpenSSF) Security Guide

Pinned Dependencies

GitHub Action tags and Docker tags are mutatble. This poses a security risk. GitHub's Security Hardening guide recommends pinning actions to full length commit.

• GitHub Security Guide
• The Open Source Security Foundation (OpenSSF) Security Guide

Harden Runner

Harden-Runner is an open-source security agent for the GitHub-hosted runner to prevent software supply chain attacks. It prevents exfiltration of credentials, detects tampering of source code during build, and enables running jobs without sudo access.

Harden runner usage

You can find link to view insights and policy recommendation in the build log

Please refer to documentation to find more details.

Keeping your actions up to date with Dependabot

With Dependabot version updates, when Dependabot identifies an outdated dependency, it raises a pull request to update the manifest to the latest version of the dependency. This is recommended by GitHub as well as The Open Source Security Foundation (OpenSSF).

• GitHub Security Guide
• The Open Source Security Foundation (OpenSSF) Security Guide

Secure Dockerfiles

Pin image tags to digests in Dockerfiles. With the Docker v2 API release, it became possible to use digests in place of tags when pulling images or to use them in FROM lines in Dockerfiles.

• The Open Source Security Foundation (OpenSSF) Security Guide

Feedback

For bug reports, feature requests, and general feedback; please create an issue in step-security/secure-repo. To create such PRs, please visit https://app.stepsecurity.io/securerepo.

Signed-off-by: StepSecurity Bot bot@stepsecurity.io