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Awesome-omni-skill docker

Docker and containerization best practices including multi-stage builds, security, and Docker Compose.

install
source · Clone the upstream repo
git clone https://github.com/diegosouzapw/awesome-omni-skill
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/diegosouzapw/awesome-omni-skill "$T" && mkdir -p ~/.claude/skills && cp -r "$T/skills/devops/docker-kprsnt2" ~/.claude/skills/diegosouzapw-awesome-omni-skill-docker && rm -rf "$T"
manifest: skills/devops/docker-kprsnt2/SKILL.md
tags
#devops
source content

Docker Best Practices

Dockerfile

  • Use specific base image tags (not :latest)
  • Use multi-stage builds for smaller images
  • Minimize layers (combine RUN commands)
  • Copy package.json first for caching
  • Run as non-root user
  • Use .dockerignore

Example Multi-stage Build

FROM node:20-alpine AS builder
WORKDIR /app
COPY package*.json ./
RUN npm ci
COPY . .
RUN npm run build

FROM node:20-alpine AS runner
WORKDIR /app
RUN addgroup -g 1001 nodejs
RUN adduser -S nodejs -u 1001
COPY --from=builder /app/dist ./dist
USER nodejs
CMD ["node", "dist/index.js"]

Docker Compose

  • Use version 3.8+
  • Define healthchecks
  • Use named volumes for persistence
  • Configure restart policies
  • Use environment files

Security

  • Scan images for vulnerabilities
  • Don't run as root
  • Use secrets for sensitive data
  • Keep base images updated
  • Use distroless/alpine images

Performance

  • Use BuildKit
  • Leverage layer caching
  • Use .dockerignore
  • Minimize image size