An Intro to Docker for Djangonauts
summary
Step‑by‑step build of a Docker image from a Dockerfile explains each line (base python image, ENV, COPY, RUN, WORKDIR, EXPOSE, CMD) then runs docker build and docker run to show image ids, container ids, and how docker’s layered cache avoids rebuilding unchanged layers. A docker‑compose.yaml creates separate web and postgres services, maps ports, runs migrations automatically, and uses a volume for persistence so docker stop doesn’t lose test data; demos include docker exec shell, docker compose up and docker compose down and a GitHub repo to fork.
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chapters (9)
- 0:00Start
- 2:44Virtual Environments in a Docker Setup
- 4:27A Docker File
- 5:14Dockerfile
- 8:20Docker Is Layered
- 10:40The Docker Exec Command
- 12:19Docker Kill versus Docker Stop
- 13:04Docker Compose
- 13:57Example of a Docker Compose File
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