📰 Dev.to · tosane932

I rewrote the Dockerfile for my Flask application using a multi-stage build, measured the result, and discovered why the image size barely changed.

A hands-on investigation of Docker volumes, service-name-based networking, and stdout logging in a Flask and PostgreSQL environment built with Docker Compose.

After 105 hours of self-study, a truck driver with no professional IT experience containerized two Flask applications and learned how Docker removes environment