In the realm of DevOps, ensuring the integrity of your images is crucial to maintaining a low change failure rate. Signing and verifying images helps to guarantee that only trusted code is deployed, reducing the chances of failing deployments or introducing vulnerabilities. In this guide, we'll explore how to sign and verify images, ensuring a trustworthy CI/CD pipeline.
To sign and verify container images, you can use tools like Notary or Notary v2, which are designed to enhance container image security. Below is a simple example demonstrating how to achieve this.
// Example of signing and verifying images
$image = 'my-image:latest';
// Signing the image
exec("cosign sign $image");
// Verifying the signed image
exec("cosign verify $image");
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