Container Image Hardening for Your Business
Docker image hardening services strip your containers down to what they need to run. Omeiro moves images to minimal distroless bases, removes package managers, runs processes as a non-root user and signs images with Sigstore Cosign.
What container image hardening looks at
The main areas we check, by hand with tools as support. The exact scope depends on your package and is agreed in writing before work starts.
Access and roles
- Over-wide permissions
- Old access keys
- Missing MFA
Storage
- Public buckets
- Unencrypted data
- Backups
Network
- Open security groups
- Public endpoints
- Logging gaps
Settings
- Default settings
- Unused resources
- Alerting
Checklist Based on common risks and good practice. The exact scope depends on your package and is agreed in writing before work starts.
What you get with container image hardening
Refactoring container images to minimal distroless base images, eliminating package managers, enforcing non-root user execution, and signing images cryptographically via Sigstore Cosign.
Basic Package
Harden up to 3 container images. 2-day delivery, 2 revisions.
Standard Package
Up to 10 images; minimal base images. 3-day delivery, 2 revisions.
Premium Package
Up to 30 images; signing; CI checks. 5-day delivery, 2 revisions.
Clear brief first
We confirm what you need before work starts, so the scope is clear on both sides.
Revisions listed
Each package shows its revision rounds. A round is one list of changes sent together.
Yours once paid
Copyright of the final work passes to you once the order is paid in full.
Work starts only after the scope is agreed in writing and you confirm you own or control the systems involved.
How our container image hardening works
Inspect the images
We check bases, packages and users.
Rebuild minimal
Images move to smaller bases with a non-root user.
Sign
Premium signs images so they can be verified.
Test
Applications are run to confirm nothing broke.
Docker image hardening scope: what to prepare and what to expect
Docker image hardening scope depends on the variety of your images, not just the count. Ten images built from one shared base are quicker to harden than three with different languages and native libraries. Prepare your Dockerfiles, the registry you push to, and notes on anything the app needs at runtime, such as shell scripts, certificates or writable folders. Those details decide whether a distroless base works as is or needs a multi-stage build that copies in only what the app requires.
A classic mistake is stripping an image so far that nobody can debug it, or running as non-root while the app still writes to root-owned paths. We test each rebuilt image by starting the container, calling health endpoints and checking file permissions before handover. A good result is a smaller image, fewer packages for scanners to flag, a non-root user and a short note on how your team can troubleshoot it when something breaks.
In short
- Delivery in 2 to 5 days, by package.
- Fixed price, shown before you order.
- Teams whose scans report hundreds of findings from base image packages.
- Developers building on full OS images out of habit.
- Copyright yours after full payment.
Container Image Hardening: common questions
How much does container image hardening cost?
Prices are fixed and shown by package on our Container Image Hardening pricing page, so you see the full price before you order. You can also ask for a custom quote.
How long does container security consulting take?
Delivery depends on the package: Basic 2-day delivery; Standard 3-day delivery; Premium 5-day delivery.
What is included in the Basic Package?
The Basic Package includes: Harden up to 3 container images. Higher packages add more scope, revisions and support.
Can I get a custom distroless image migration package?
Yes. If none of the packages fits, use the custom package form on our pricing page to describe what you need, and our team sends you a fixed price.
Will my app still run?
We test each rebuilt image. Some apps need small changes.
What is distroless?
A base image with only the app's runtime, with no shell or package manager.
What does signing do?
It lets you verify that an image is the one you built.
Do you add CI checks?
Premium does.
How do I debug a distroless container without a shell?
Use an ephemeral debug container attached to the running pod, or build a separate debug variant of the image for non-production use. We document the method that fits your platform so the production image stays minimal.
Who owns the final work?
Copyright of the final work passes to you once the order is paid in full. Paid fonts, stock files or licences, if used, are licensed in your name.
Ready to start your container image hardening?
Compare the packages and pick the one that fits. Not sure which? Write to us and we will help you choose.