Docker is the leading containerization platform that enables you to package applications and their dependencies into lightweight, portable containers. This recipe provides instant access to Docker for container development, testing, and deployment.
Every EasyEnv recipe spins up in seconds on a real Linux VM-not a stripped-down sandbox. The Docker recipe is provisioned by an open Ansible role, so the machine that boots for you is reproducible, inspectable, and matches what you would get in production.
$ easyenv workspace create --recipe docker --name docker-demo
Provisioning Docker...
Workspace ready in ~45s
$ easyenv workspace ssh docker-demo
Connected. You're on the machine.Docker is the container runtime and toolchain that mainstreamed Linux containers. It packages an application together with its dependencies into an image, runs that image as an isolated process, and ships it across machines without "works on my machine" surprises. Modern Docker uses containerd under the hood and integrates with Compose, Buildx, and BuildKit for multi-stage and multi-arch builds.
On EasyEnv, Docker comes pre-installed with the daemon already configured and your user added to the `docker` group, so `docker run hello-world` works the second the workspace boots.
A multi-stage Dockerfile for a Node service that produces a small final image.
FROM node:22-alpine AS build
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build
FROM node:22-alpine
WORKDIR /app
COPY --from=build /app/dist ./dist
COPY --from=build /app/node_modules ./node_modules
USER node
EXPOSE 3000
CMD ["node", "dist/server.js"]Questions hiring teams use to evaluate engineers on Docker. Want to ask them on a real, production-like environment? Try EasyEnv for technical interviews.
What is the difference between a Docker image and a container?
Explain layered images and why image size matters.
How do you debug a container that crashes immediately on start?
What are the security implications of running a container as root?
How does docker compose differ from running `docker run` repeatedly?
Learn Docker from first container to production. Images, networking, volumes, Compose, multi-stage builds, and secure registries.
Stop guessing from resumes. Drop candidates into a real Docker workspace, watch them debug, deploy and operate it, score the result automatically, and replay the session. We also evaluate how they work with AI.
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