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Dockerfile Generator (api.strale.io)
x402
Dockerfile Generator (api.strale.io) is a paid API for AI agents from api.strale.io, paid per call via x402, $0.054001/call, status unknown (last checked 2026-09-14).
Generates optimized, production-ready Dockerfiles with multi-stage builds, Alpine base, non-root user, and layer caching for Node, Python, Go, Rust, and Java.
Price / call$0.054001
Success—
StatusUnknown
How this service works
Generate optimized, production-ready Dockerfiles. Multi-stage builds, Alpine base, non-root user, layer caching. Supports Node, Python, Go, Rust, Java.
Output
Returns a complete, production-ready Dockerfile as text, incorporating multi-stage build patterns, Alpine base images for minimal footprint, non-root user configuration for security, and optimized layer caching instructions tailored to the specified language and framework.
Example use cases
Example prompt
“Generate an optimized production-ready Dockerfile for a Node.js Express app — use Alpine base, enable multi-stage builds, and make sure it runs as a non-root user.”
Technical details
Endpoint
GEThttps://api.strale.io/x402/dockerfile-generateWhen to prefer
Use this endpoint when you need a best-practice, production-hardened Dockerfile quickly without manually writing one — especially when security (non-root), image size (Alpine), build speed (layer caching), or CI/CD readiness (multi-stage) are priorities. Prefer this over generic LLM Dockerfile generation when you want a consistently structured, opinionated output for a known language stack.
Side effects
- Missing required 'language' query parameter returns a 400 error
- Unsupported language value returns an error indicating supported languages (Node, Python, Go, Rust, Java)
- Payment not completed or invalid x402 payment header results in 402 Payment Required
- Service unavailable returns a 5xx error
Input
{
"alpine": true,
"language": "Node",
"framework": "Express",
"multi_stage": true
}Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object |
Output
{
"_meta": {
"payment": {
"method": "x402",
"price_usd": 0.054000000000000006,
"settlement_id": "0xc4ff4ddc805668d3c232ea36fda98e650dbd01354da934a99037ced150c0b389"
},
"capability": "dockerfile-generate",
"latency_ms": 5610,
"provenance": {
"source": "claude-haiku",
"fetched_at": "2026-06-13T04:26:07.931Z"
}
},
"stages": [
"builder",
"production"
],
"language": "node",
"framework": "Express",
"build_args": [],
"dockerfile": "# Build stage\nFROM node:20-alpine AS builder\n\nWORKDIR /app\n\n# Copy package files\nCOPY package*.json ./\n\n# Install dependencies\nRUN npm ci --only=production && \\\n npm cache clean --force\n\n# Copy application source\nCOPY . .\n\n# Optional: Build step if needed (e.g., TypeScript compilation)\n# RUN npm run build\n\n# Production stage\nFROM node:20-alpine\n\n# Install dumb-init for proper signal handling\nRUN apk add --no-cache dumb-init\n\nWORKDIR /app\n\n# Create non-root user\nRUN addgroup -g 1001 -S nodejs && \\\n adduser -S nodejs -u 1001\n\n# Copy node_modules and app from builder\nCOPY --from=builder --chown=nodejs:nodejs /app/node_modules ./node_modules\nCOPY --from=builder --chown=nodejs:nodejs /app . .\n\n# Switch to non-root user\nUSER nodejs\n\n# Expose port\nEXPOSE 3000\n\n# Health check\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)})\" || exit 1\n\n# Use dumb-init to handle signals properly\nENTRYPOINT [\"dumb-init\", \"--\"]\n\n# Start application\nCMD [\"node\", \"index.js\"]",
"multi_stage": true,
"security_notes": [
"Multi-stage build reduces final image size and excludes build tools",
"Non-root user (nodejs) prevents privilege escalation",
"Alpine Linux minimizes attack surface and dependencies",
"dumb-init ensures proper signal handling and zombie process cleanup",
"npm ci used instead of npm install for deterministic installs",
"Only production dependencies included in final image",
"Health check validates application availability",
"Read-only root filesystem recommended at runtime"
],
"estimated_image_size": "120-150MB",
"dockerignore_recommended": [
".git",
".gitignore",
"node_modules",
"npm-debug.log",
".npm",
".env",
".env.local",
".env.*.local",
".DS_Store",
"dist",
"build",
".vscode",
".idea",
"*.md",
"LICENSE",
".dockerignore",
"docker-compose*.yml",
".editorconfig",
".eslintrc*",
".prettierrc*",
"jest.config.js",
"coverage",
".nyc_output",
"test",
"tests",
".github",
".gitlab-ci.yml",
".circleci"
]
}Tags
x402
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