api.strale.io

{
  "example": {
    "build_args": [],
    "dockerfile": "# Stage 1: Dependencies\nFROM node:18-alpine AS dependencies\nWORKDIR /app\nCOPY package*.json ./\nRUN npm ci --only=production && npm cache clean --force\n\n# Stage 2: Builder\nFROM node:18-alpine AS builder\nWORKDIR /app\nCOPY package*.json ./\nRUN npm ci\nCOPY . .\nRUN npm run build --if-present\n\n# Stage 3: Runtime\nFROM node:18-alpine AS runtime\nWORKDIR /app\n\n# Install dumb-init for proper signal handling\nRUN apk add --no-cache dumb-init\n\n# Create non-root user\nRUN addgroup -g 1001 -S nodejs && adduser -S nodejs -u 1001\n\n# Copy production dependencies from dependencies stage\nCOPY --from=dependencies --chown=nodejs:nodejs /app/node_modules ./node_modules\n\n# Copy application code from builder stage\nCOPY --from=builder --chown=nodejs:nodejs /app/package*.json ./\nCOPY --from=builder --chown=nodejs:nodejs /app/dist ./dist\nCOPY --from=builder --chown=nodejs:nodejs /app/public ./public\n\n# Switch to non-root user\nUSER nodejs\n\n# Expose port\nEXPOSE 3000\n\n# Healthcheck\nHEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \\\n  CMD node -e \"require('http').get('http://localhost:3000/health', (r) => {if (r.statusCode !== 200) throw new Error(r.statusCode)})\"\n\n# Use dumb-init to handle signals properly\nENTRYPOINT [\"dumb-init\", \"--\"]\n\n# Start application\nCMD [\"node\", \"dist/index.js\"]",
    "dockerignore_recommended": [
      "node_modules",
      "npm-debug.log",
      ".git",
      ".gitignore",
      ".env",
      ".env.local",
      ".DS_Store",
      "dist",
      "build",
      ".next",
      "coverage",
      ".nyc_output",
      "*.log",
      ".vscode",
      ".idea",
      "*.swp",
      "*.swo",
      "*~",
      ".eslintcache",
      "yarn-error.log",
      ".npm",
      ".eslintignore",
      "README.md",
      "LICENSE",
      ".editorconfig",
      "docker-compose*.yml",
      "Dockerfile*",
      ".dockerignore",
      ".github",
      ".gitlab-ci.yml",
      ".circleci",
      "test",
      "tests",
      "jest.config.js",
      "vitest.config.js",
      ".mocharc.json"
    ],
    "estimated_image_size": "120-150MB",
    "framework": "express",
    "language": "en",
    "multi_stage": true,
    "security_notes": [
      "Non-root user (nodejs:1001) runs the application",
      "Multi-stage build reduces final image size by excluding dev dependencies",
      "Alpine Linux base image minimizes attack surface",
      "dumb-init handles PID 1 and signal forwarding correctly",
      "Only production dependencies copied to final stage",
      "Read-only filesystem recommended in production via security context",
      "No package manager or build tools in final image",
      "HEALTHCHECK validates application responsiveness"
    ],
    "stages": [
      "dependencies",
      "builder",
      "runtime"
    ]
  },
  "properties": {
    "dockerfile": {
      "type": "string"
    },
    "estimated_image_size": {
      "type": "string"
    },
    "security_notes": {
      "type": "array"
    },
    "stages": {
      "type": "array"
    }
  },
  "type": "object"
}