# Course 31 - Dive Into Docker | Episode 7: Building, Running, and Syncing Flask Applications

Page: https://stenobird.com/podcast/cybercode-academy-7578615/course-31-dive-into-docker-episode-7-building-running-and-syncing-flask-applications
Text version: https://stenobird.com/podcast/cybercode-academy-7578615/course-31-dive-into-docker-episode-7-building-running-and-syncing-flask-applications.md
Podcast: [CyberCode Academy](https://stenobird.com/podcast/cybercode-academy-7578615)
Published: 2026-04-26T06:00:02+00:00
Episode link: https://www.spreaker.com/episode/course-31-dive-into-docker-episode-7-building-running-and-syncing-flask-applications--71307495
Audio file: https://dts.podtrac.com/redirect.mp3/api.spreaker.com/download/episode/71307495/master_the_docker_command_line.mp3
Processing state: not_requested
JSON: https://stenobird.com/v1/public/podcasts/cybercode-academy-7578615/episodes/course-31-dive-into-docker-episode-7-building-running-and-syncing-flask-applications
Duration seconds: 1369

## Resource

In this lesson, you’ll learn about: Docker CLI workflows, container management, live development, and debugging techniques1. Image Management & Docker CLI WorkflowYou start by working with Docker image lifecycle operations:🔹 Build Imagesdocker build -t myapp:1.0 . Uses Dockerfile instructions Leverages layer caching → faster rebuilds 🔹 Tagging Imagesdocker tag myapp:1.0 username/myapp:1.0 Used for version control Prepares image for sharing 🔹 DockerHub Workflow Login → docker login Push → docker push Pull → docker pull 👉 Enables sharing across machines and teams2. Running & Managing Containers🔹 Core Run Flagsdocker run -it -p 5000:5000 -e FLASK_APP=app.py myapp FlagPurpose-itInteractive terminal-pPort mapping-eEnvironment variables🔹 Detached Modedocker run -d myapp Runs container in background Frees terminal 🔹 Monitoring Containers docker logs → view logs docker stats → live performance metrics 🔹 Restart Policiesdocker run --restart on-failure myapp Automatically restarts crashed containers Improves reliability in production 3. Live Development with Volumes🔹 Volume Mountingdocker run -v $(pwd):/app myapp Syncs local code into container Enables real-time updates 🔹 Flask Live ReloadSet:FLASK_DEBUG=1 Automatically reloads server on file changes 4. Debugging & Container Access🔹 Enter Running Containerdocker exec -it container_id bash Inspect filesystem Run debugging commands 🔹 Run One-Off Commands Run tests Check logs Inspect environment 5. Platform Compatibility Issues⚠️ File Watch Issues (Windows/Mac) Inotify may not work properly in some environments ✅ Solution: Use slim Python images instead of Alpine 👉 Improves: File syncing Stability of live reload 6. File Permissions Handling Files created inside containers may become root-owned Fix by aligning: container…

## Actions

- request_transcript: `POST https://stenobird.com/v1/public/podcasts/cybercode-academy-7578615/episodes/course-31-dive-into-docker-episode-7-building-running-and-syncing-flask-applications/transcription-requests` — Idempotently request low-priority transcript generation for this episode.
- read_markdown: `GET https://stenobird.com/podcast/cybercode-academy-7578615/course-31-dive-into-docker-episode-7-building-running-and-syncing-flask-applications.md` — Read the agent-friendly Markdown representation of this episode resource.

A page view does not enqueue transcription. Agents should invoke `request_transcript` explicitly when they need this episode processed.

## Transcript

Full transcripts are not published on public pages unless there is a clear rights basis.