How would you rate your level of proficiency with Docker and its components?

The level of Docker proficiency can be assessed based on the following criteria:

• Understanding of core concepts: containers, images, Dockerfile, volumes, networks.
• Ability to create and optimize Dockerfiles for PHP applications.
• Experience with Docker Compose for orchestrating multiple services (e.g., PHP, MySQL, Nginx).
• Skills in debugging and managing containers (starting, stopping, logging).

Example of a simple Dockerfile for a PHP application:

FROM php:8.1-apache
COPY src/ /var/www/html/
RUN docker-php-ext-install pdo pdo_mysql

If you confidently create such images, set up environments, and use Docker Compose, your level can be considered at least middle.