How I Built, Scanned, and Automated a Docker Pipeline

I recently completed a hands-on Docker and DevSecOps lab as part of my learning track, and I wanted to write up the full walkthrough — including the parts where things broke, because that's honestly where the real learning happened. By the end of this lab, I had: Pulled and inspected a public container image from Docker Hub Built a Python Flask web app and packaged it into a secure Docker image Pushed it to Docker Hub and shared it Automated the entire workflow with a GitHub Actions pipeline tha