Introduction

Containerization is a powerful method to package applications into isolated environments. Here's a quick overview:

  • What is a container?
    A container is a lightweight, standalone, and executable software package that includes everything needed to run an application: code, runtime, system tools, libraries, and settings.

  • Popular Tools
    • Docker
    • Kubernetes
    • Podman

Containerization Overview

Visualizing containerization concepts

Steps to Containerize Your Application

  1. Create a Dockerfile
    Define your application’s environment and dependencies.
    Example: 

    FROM python:3.9
WORKDIR /app
COPY . /app
RUN pip install -r requirements.txt
CMD ["python", "app.py"]

  2. Build the Image
    Run docker build -t my_app . to create a container image.

  3. Run the Container
    Use docker run -d -p 8000:80 my_app to start the container.

Dockerfile Structure

Dockerfile structure example

Best Practices

  • Use minimal base images to reduce attack surfaces.
  • Keep containers immutable for consistency and security.
  • Optimize layer size by combining commands in the Dockerfile.

Container Networking

Container networking and security

Related Resources

For deeper insights, check our Containerization Best Practices guide.
Explore more: Containerization FAQ

Containerization Icon

Containerization icon