Docker Deep Dive: Beyond docker run (2026)

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 npm run build # Result: ~1.5GB image with devDependencies, source code, build tools # ✅ Multi-stage: Production image only has what it needs # Stage 1: Build FROM node: