ruby

Pull Commands

Download the runtime container images

Interactive Development

Start interactive session for development

docker run -it --name ruby-dev \\
  -v $(pwd):/workspace \\
  -w /workspace \\
  <Registry URL>/cleanstartos/ruby:latest-dev /bin/sh

Run Hello World

Execute a simple Hello World program

docker run --rm <Registry URL>/cleanstartos/ruby:latest-dev ruby --version

Mount Workspace

Run container with local workspace mounted

docker run --rm -v $(pwd):/app -w /app <Registry URL>/cleanstartos/ruby:latest-dev python --version

Application Server

Run application with port forwarding

docker run -d --name ruby-app \
  -p 8000:8000 \
  -v $(pwd):/app \
  -w /app \
  <Registry URL>/cleanstartos/ruby:latest

Environment Variables

Configuration options available through environment variables

PATH

System PATH configuration

/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

Security Best Practices

Recommended security configurations and practices

• Use specific image tags for production (avoid latest)
• Configure resource limits: memory and CPU constraints
• Enable read-only root filesystem when possible
• Run containers with non-root user (--user 1000:1000)
• Use --security-opt=no-new-privileges flag
• Regularly update container images for security patches
• Implement proper network segmentation
• Monitor container metrics for anomalies

Kubernetes Security Context

Recommended security context for Kubernetes deployments

securityContext:
  runAsNonRoot: true
  runAsUser: 1000
  runAsGroup: 1000
  readOnlyRootFilesystem: true
  allowPrivilegeEscalation: false
  capabilities:
    drop: ['ALL']