Scanning a Docker image for vulnerabilities.

Question

Pulumi · Accepted Answer

To scan a Docker image for vulnerabilities using Pulumi, you generally need to integrate with third-party tools or services that can perform the scanning. However, based on the Pulumi Registry Results, Pulumi itself does not provide a resource specifically for scanning Docker images for vulnerabilities. But we can use Pulumi to build and push a Docker image to a registry where such scanning can be orchestrated.

For example, some container registries like those provided by JFrog Artifactory have built-in scanning capabilities. In the Pulumi Registry, there are resources like `artifactory.VirtualDockerRepository` or `artifactory.FederatedDockerRepository` that can be used to manage Docker repositories in Artifactory, which, coupled with the right configuration, could handle vulnerability scanning.

Here's a simple Pulumi program that sets up a Docker image using Pulumi's Docker provider and pushes it to an Artifactory Docker repository, where you would have vulnerability scanning set up. Note that for simplicity and because we do not have actual details to configure the scanning itself, the following code focuses on the Pulumi Docker image aspect:

```typescript
import * as pulumi from "@pulumi/pulumi";
import * as docker from "@pulumi/docker";

// Details for the container registry (e.g., Artifactory).
// Ensure you have the correct endpoint and credentials.
const registryInfo = { // Replace these with your Artifactory registry details
    server: "your-registry-domain.jfrog.io",
    username: "your-registry-username",
    password: "your-registry-password" // Use Pulumi secret handling in production
};

// Define a Docker image resource
const myImage = new docker.Image("myImage", {
    imageName: "myrepo/myimage:latest",
    build: {
        context: "./app" // Directory containing the Dockerfile and source code
    },
    registry: registryInfo,
    skipPush: false // Set to false to push the image after build
});

// Export the resulting base name and registry details
export const baseImageName = myImage.baseImageName;
export const imageRegistryServer = registryInfo.server;
```

In this code:
- We import the Pulumi SDK and Docker module to define our Docker image resource.
- We specify `registryInfo` containing the information required to authenticate with the container registry, which you should replace with your actual registry details.
- The `docker.Image` resource is used to define the Docker image we want to build and push. You must provide the directory where your Dockerfile and application source code are located under `build.context`.
- Lastly, we export the image name and registry server to be visible outside of the Pulumi application. This can be useful for CI/CD integration.

After setting up this image using Pulumi, the next step would be to configure your Artifactory Docker repository to scan the image for vulnerabilities as part of its own process. Please consult the documentation for the registry and scanning solution you're using, as the scanning configuration is typically done in the registry's web interface or through its API, rather than in Pulumi code.

Remember, before running this code, ensure you have Pulumi installed and configured with the appropriate cloud credentials, Docker installed on your machine, and you’ve logged in to your Docker registry. On the first run, Pulumi will ask you to create a new stack, which represents an isolated environment for your project.