Docker Containerisation

Taking an application that runs on "whatever's installed on the server" and packaging it into a Docker image that runs the same way everywhere — with multi-stage builds, a non-root user, and a registry to push to.

DockerComposeRegistry

What you get

  • Dockerfile written for your actual stack (Java/Tomcat, Node, PHP, whatever it is), not a generic template
  • Multi-stage builds so the shipped image doesn't carry your build toolchain
  • Image hardening — non-root user, minimal base image, no secrets baked into layers
  • Registry setup (Docker Hub, ECR, GitLab Registry, or self-hosted) with a tagging scheme that makes rollback obvious
  • docker-compose (or a Kubernetes manifest, if that's the target) for local and staging parity

Who it's for

Teams running a legacy app directly on a VM who need it portable before it can move to Kubernetes, a new host, or a second environment.

Typical engagement

Three days to two weeks per application, depending on how many undocumented dependencies the app has picked up.

How we approach this

We containerize one application at a time, starting with the one causing the most pain — usually the hardest to deploy consistently — so you see a working, portable image before committing to containerize everything else.

Security & reliability

Images run as a non-root user by default, are built from minimal base images to shrink the attack surface, and never bake in secrets or credentials at build time — those get injected at runtime instead.

Monitoring & incident response

Container health checks are wired in from the start, so an unhealthy container gets restarted or flagged automatically instead of silently serving broken requests.

Related case study

Migrated monolith to microservices on EKS.

40% cost reduction, 99.99% uptime

Frequently asked questions

Our app has hardcoded file paths and assumes root — is that a problem?

It's the normal starting point for this work, not a blocker. Untangling exactly that is most of what this engagement is.

Do you handle the registry and CI integration too?

Yes — a container nobody can build or push automatically just moves the manual-deploy problem, it doesn't solve it.

What about apps with local file storage or session state?

We identify anything that assumes a single, persistent server up front — usually it needs to move to shared storage or an external session store before containerizing, and we scope that as part of the work.

Do you containerize databases too?

Usually not for production — we'll recommend a managed database service instead and containerize the application layer around it.