container-orchestrationlisted
Install: claude install-skill aiskillstore/marketplace
# Container Orchestration
Docker and Kubernetes patterns for containerized applications.
## Dockerfile Best Practices
```dockerfile
# Use specific version, not :latest
FROM python:3.11-slim AS builder
# Set working directory
WORKDIR /app
# Copy dependency files first (better caching)
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
# Copy application code
COPY src/ ./src/
# Production stage (multi-stage build)
FROM python:3.11-slim
WORKDIR /app
# Create non-root user
RUN useradd --create-home appuser
USER appuser
# Copy from builder
COPY --from=builder /app /app
# Set environment
ENV PYTHONUNBUFFERED=1
# Health check
HEALTHCHECK --interval=30s --timeout=3s \
CMD curl -f http://localhost:8000/health || exit 1
EXPOSE 8000
CMD ["python", "-m", "uvicorn", "src.main:app", "--host", "0.0.0.0"]
```
### Dockerfile Rules
```
DO:
- Use specific base image versions
- Use multi-stage builds
- Run as non-root user
- Order commands by change frequency
- Use .dockerignore
- Add health checks
DON'T:
- Use :latest tag
- Run as root
- Copy unnecessary files
- Store secrets in image
- Install dev dependencies in production
```
## Docker Compose
```yaml
# docker-compose.yml
version: "3.9"
services:
app:
build:
context: .
dockerfile: Dockerfile
ports:
- "8000:8000"
environment:
- DATABASE_URL=postgres://user:pass@db:5432/app
depends_on:
db:
condition: service_healthy
healthcheck:
test: