What tools or technologies have you used to create a containerized environment?

I most often use Docker to create a containerized environment — it is a standard tool for packaging applications and their dependencies into containers.

Main technologies and tools:

• Docker: creating a Dockerfile to describe the application image.
• Docker Compose: for orchestrating multiple containers in a local environment.
• Kubernetes (in production): for managing scalable containerized applications.

Example of a simple Dockerfile for a Python application:

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

This ensures environment consistency and simplifies deployment.