Technology

Docker Development Services — Containerized Apps Built Right

Production Docker engineering — small images, multi-stage builds, BuildKit caching, security scanning, and the operational discipline containers deserve.

What we build with Docker

  • Multi-stage Dockerfiles producing small, secure runtime images (often under 50MB)
  • BuildKit caching with mounts, secrets, and SSH for fast CI builds across architectures
  • Multi-arch builds for amd64 + arm64 in a single CI run (Graviton / Ampere ready)
  • Image signing with Cosign and Sigstore, with policy enforcement at deploy time
  • Vulnerability scanning with Trivy, Grype, Snyk, or registry-native scanners
  • Distroless and Chainguard base images for minimal attack surface
  • Non-root containers with proper user, capability dropping, and read-only filesystems
  • Docker Compose for local development environments that match production contracts
  • Devcontainers for reproducible developer setups (IDE-in-container)
  • ECR, GHCR, GAR, ACR, and Harbor registry strategies with lifecycle policies
  • SBOM generation (Syft) and supply-chain attestations (in-toto)
  • Container runtime selection: containerd, CRI-O, gVisor, or Kata for sensitive workloads
  • Migration from monolithic VMs to containerized deployments
  • Optimized base-image refresh cadence and CVE response runbooks

Why DiveScale

Built by engineers who ship Docker in production

Docker is the universal runtime contract. DiveScale ships Dockerfiles that are small, layer-cached, scanned, and signed — the foundation that makes Kubernetes, ECS, or Cloud Run work reliably.

Most production Docker problems are upstream: huge images, leaky caches, untrusted base layers, and root processes. We fix them at the source so the rest of the platform inherits the discipline.

We default every container to a non-root user, drop unneeded capabilities, and use read-only filesystems where the app allows. Distroless and Chainguard bases make these defaults free; PNG-sized Node and Go images are routine.

Multi-architecture builds (amd64 + arm64) are non-negotiable for any image that might land on Graviton, Ampere, or Apple Silicon dev machines. BuildKit makes multi-arch single-CI; the marginal cost is small and the option value is real.

Supply-chain security is now table stakes. Signed images via Cosign, SBOMs generated via Syft, vulnerability scan gates in CI, and policy enforcement at deploy time — these are not optional for production workloads.

And we keep developer experience tight: Docker Compose for local dev that matches production, devcontainers when teams want the IDE in the container, and BuildKit caching that makes CI builds finish in single-digit minutes.

Docker use cases we deliver

Containerizing legacy apps

Move VM-deployed apps to Docker with minimal app changes — proper Dockerfiles, secrets via env-from-vault, and graceful shutdown wired in.

Multi-arch builds

Build for amd64 + arm64 in a single CI run, ready for Graviton/Ampere deployment.

Image hardening

Distroless or chainguard base images, non-root user, minimal capabilities, and scanning gates in CI.

Local dev environments

Docker Compose stacks that match production: same image, same env-var contract, same service discovery shape.

Build pipeline optimization

BuildKit caching, layer ordering, and dependency strategies that cut CI build times by 60–80%.

Dockerfile audits

We audit existing Dockerfiles for size, security, and CI efficiency — with a prioritized remediation plan.

Supply-chain attestations

SBOM generation via Syft, Cosign signing with OIDC keyless flow, and policy enforcement at deploy time so unsigned images cannot reach production.

Devcontainer rollouts

Reproducible developer environments with VS Code Dev Containers or JetBrains devcontainers — onboarding goes from days to hours.

Container registry strategy

ECR, GHCR, GAR, ACR, or Harbor — with lifecycle policies, replication, and pull-through caching to keep registries fast and cheap.

Runtime hardening

Non-root, read-only filesystems, capability dropping, seccomp profiles, and gVisor / Kata for sensitive workloads.

How we deliver

Our Docker delivery process

  1. 01

    Image baseline

    We measure image size, layer count, scan posture, and build time on existing Dockerfiles before changing anything.

  2. 02

    Multi-stage + cache

    Rewrite Dockerfiles with multi-stage builds, ordered layers, and BuildKit cache mounts where useful.

  3. 03

    Sign + scan in CI

    Trivy or Grype scan gates, Cosign image signing, and registry policies enforcing both.

  4. 04

    Operate & evolve

    Base-image refresh on schedule, CVE response runbook, and ongoing image diet.

Docker — Frequently Asked Questions

As small as the runtime needs. Most Node services land under 200MB; Python services 250–400MB; Go services often under 30MB with distroless. Smaller images mean faster pulls, faster cold starts, and smaller attack surface.

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