Technologies
Docker Deployment Services
Docker packages an application with everything it needs to run — dependencies, runtime version, configuration — into a container that behaves the same on a developer's machine, a staging server, and production. This matters most when infrastructure needs to run somewhere other than a managed platform like Vercel, or when the app has to live alongside other services in a self-hosted environment.
I set up multi-stage Docker builds that keep the final image small, plus the CI/CD pipeline that builds and deploys it.
What's Included
- checkMulti-stage Dockerfile that keeps the production image lean (no dev dependencies shipped)
- checkEnvironment variable and secrets handling appropriate to the target platform
- checkCI/CD pipeline that builds, tests, and deploys the container on push
- checkHealth checks and restart policies for reliability
- checkReverse proxy and SSL configuration where self-hosting
When Docker Is Worth the Setup
If the target is a managed platform that handles builds for you (Vercel), Docker is usually unnecessary overhead. It earns its place when deploying to your own servers, running on AWS ECS or a similar container platform, or when the app needs to run consistently alongside other containerized services.
Frequently Asked Questions
Do I need Docker for a Next.js app?add
Not if deploying to Vercel or a similar managed platform that handles the build environment for you. It becomes worth it when self-hosting, deploying to AWS/GCP container services, or when consistency across a team's different local environments is a real recurring problem.
How do you keep Docker images small?add
Multi-stage builds — dependencies and the build step happen in an intermediate stage, and only the compiled output plus production dependencies get copied into the final image, keeping build tools and dev dependencies out of what actually ships.
Can Docker deployments still support CI/CD?add
Yes — a standard pipeline builds the image, runs tests against it, pushes it to a registry, and triggers a deployment, the same automation flow as any other deployment target, just containerized.