containerizing-applicationslisted
Install: claude install-skill aiskillstore/marketplace
# Containerizing Applications
## Quick Start
1. Run impact analysis first (env vars, network topology, auth/CORS)
2. Generate Dockerfiles using patterns below
3. Create docker-compose.yml with proper networking
4. Package as Helm chart for Kubernetes
## Dockerfile Patterns
### FastAPI/Python (Multi-stage with uv)
```dockerfile
# syntax=docker/dockerfile:1
FROM python:3.13-slim AS builder
WORKDIR /app
RUN pip install uv
COPY pyproject.toml .
RUN uv pip install --system --no-cache -r pyproject.toml
FROM python:3.13-slim
WORKDIR /app
COPY --from=builder /usr/local/lib/python3.13/site-packages /usr/local/lib/python3.13/site-packages
COPY . .
RUN useradd -u 1000 appuser && chown -R appuser /app
USER appuser
EXPOSE 8000
CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
```
### Next.js (Standalone)
```dockerfile
# syntax=docker/dockerfile:1
FROM node:20-alpine AS deps
WORKDIR /app
COPY package*.json ./
RUN npm ci
FROM node:20-alpine AS builder
WORKDIR /app
COPY --from=deps /app/node_modules ./node_modules
COPY . .
ARG NEXT_PUBLIC_API_URL
ARG NEXT_PUBLIC_SSO_URL
ENV NEXT_PUBLIC_API_URL=$NEXT_PUBLIC_API_URL
ENV NEXT_PUBLIC_SSO_URL=$NEXT_PUBLIC_SSO_URL
RUN npm run build
FROM node:20-alpine AS runner
WORKDIR /app
ENV NODE_ENV=production
RUN addgroup -g 1001 -S nodejs && adduser -S nextjs -u 1001
COPY --from=builder /app/.next/standalone ./
COPY --from=builder /app/.next/static ./.next/static
COPY --fr