القائمة
Learn Dockerfile fundamentals and best practices for building production-ready container images
يُحدَّد Prompt الذي يراجع المصدر أولًا بشكل افتراضي. يمكنك التبديل إلى أمر مباشر أو تنزيل نسخة محلية.
اقرأ SKILL.md وأي ملفات مرافقة يعرضها SkillsMP قبل أن تقرر التثبيت.
التثبيت باستخدام Codex أو Claude انسخ هذا Prompt والصقه في Codex أو Claude أو مساعد آخر ليراجع صفحة Skill ويثبّتها لك.
يتجاوز الأمر المباشر Prompt المخصّص للمراجعة. افحص المصدر قبل تشغيله.
npx skills add https://github.com/pluginagentmarketplace/custom-plugin-docker --skill dockerfile-basicsيبقى الأمر في سطر واحد. مرّر أفقيًا لمراجعته كاملًا قبل النسخ.
تفضّل نسخة محلية؟ نزّل الملفات المتاحة حاليًا لدى SkillsMP.
Set up multi-container applications with Docker Compose including services, networks, and volumes
Configure Docker networking for containers including bridge, overlay, and service discovery
Optimize Docker images and containers for size, build speed, and runtime performance
استنادا إلى تصنيف SOC المهني
عرض SKILL.md
| name | dockerfile-basics |
| description | Learn Dockerfile fundamentals and best practices for building production-ready container images |
| sasmp_version | 1.3.0 |
| bonded_agent | 01-docker-fundamentals |
| bond_type | PRIMARY_BOND |
Master Dockerfile fundamentals and 2024-2025 best practices for building secure, optimized container images.
Provide comprehensive guidance on Dockerfile syntax, instruction ordering, layer optimization, and security best practices.
| Parameter | Type | Required | Default | Description |
|---|---|---|---|---|
| base_image | string | No | - | Base image to use |
| language | string | No | - | Programming language (node/python/go/java) |
| optimize | boolean | No | true | Apply optimization recommendations |
| Instruction | Purpose | Example |
|---|---|---|
| FROM | Base image | FROM node:20-alpine |
| WORKDIR | Set working directory | WORKDIR /app |
| COPY | Copy files | COPY package*.json ./ |
| RUN | Execute command | RUN npm ci |
| ENV | Set environment | ENV NODE_ENV=production |
| EXPOSE | Document port | EXPOSE 3000 |
| USER | Set user | USER appuser |
| CMD | Default command | CMD ["node", "app.js"] |
| ENTRYPOINT | Fixed command | ENTRYPOINT ["./start.sh"] |
| HEALTHCHECK | Health check | HEALTHCHECK CMD curl -f http://localhost/ |
# 1. Base image (most stable)
FROM node:20-alpine
# 2. System dependencies
RUN apk add --no-cache curl
# 3. Create user (security)
RUN addgroup -g 1001 app && adduser -u 1001 -G app -D app
# 4. Set working directory
WORKDIR /app
# 5. Copy dependency files (cache layer)
COPY package*.json ./
# 6. Install dependencies
RUN npm ci --only=production
# 7. Copy application code (most volatile)
COPY --chown=app:app . .
# 8. Switch to non-root user
USER app
# 9. Health check
HEALTHCHECK --interval=30s --timeout=3s CMD curl -f http://localhost:3000/health || exit 1
# 10. Default command
CMD ["node", "server.js"]
# Always use specific version tags
FROM node:20.10-alpine # Good
# FROM node:latest # Bad
# Run as non-root user
USER nonroot
# Use multi-stage builds
FROM node:20 AS builder
# ... build steps ...
FROM node:20-alpine AS runtime
COPY --from=builder /app/dist ./
# Combine RUN commands
RUN apt-get update && \
apt-get install -y --no-install-recommends curl && \
rm -rf /var/lib/apt/lists/*
# Use .dockerignore
# node_modules, .git, *.md, etc.
# Leverage BuildKit cache mounts
RUN --mount=type=cache,target=/root/.npm npm ci
| Error | Cause | Solution |
|---|---|---|
COPY failed: file not found | File outside context | Check .dockerignore |
returned non-zero code: 127 | Command not found | Install package first |
permission denied | Running as non-root | Use COPY --chown |
# Lint Dockerfile
hadolint Dockerfile
# Build with no cache
docker build --no-cache -t app:test .
# Inspect layers
docker history app:test
| Symptom | Cause | Fix |
|---|---|---|
| Large image size | No multi-stage | Add build stage |
| Slow builds | Poor layer order | Move COPY after dependencies |
| Security warnings | Root user | Add USER instruction |
Skill("dockerfile-basics")