Docker Deep Dive: Beyond docker run (2026)


You know docker run and docker-compose up. Now let's unlock the real power of Docker for development and production.




Multi-Stage Builds: Smaller, Faster, Safer Images





# ❌ Single-stage: Everything in one image (HUGE)
FROM node:20
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN...