Django Academy · 课时

入口点、迁移与 collectstatic

在容器内运行启动步骤

入口点、迁移与 collectstatic 是 CoddyKit 上的免费 Django Academy 课时。这是第 3 节课，共 4 节。你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。这是 Django Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Django Academy 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

Startup Steps Matter

Before serving traffic, a container often needs to run migrations and gather static files. Let's automate those startup steps. ⚙️

What an Entrypoint Is

An entrypoint is a script that runs every time the container starts, right before your main command takes over.

Write the Script

Create entrypoint.sh with a shebang line, so the container knows to run it with the shell.

#!/bin/sh
set -e

Apply Migrations on Boot

Run migrate inside the entrypoint, so your database schema is always current when the app starts.

python manage.py migrate --noinput

Gather Static Files

Run collectstatic to copy CSS and JS into one folder that your server can serve in production.

python manage.py collectstatic --noinput

Hand Off with exec

End the script with exec so your app becomes process 1 and receives stop signals cleanly.

exec "$@"

Make It Executable

Set the script as executable in your Dockerfile so the container can actually run it on startup.

RUN chmod +x entrypoint.sh

Wire It in the Dockerfile

Point ENTRYPOINT at your script, then keep CMD as the command it should run last.

ENTRYPOINT ["./entrypoint.sh"]
CMD ["gunicorn", "config.wsgi"]

Why --noinput

The --noinput flag stops Django from pausing for prompts, which is essential for unattended container startups.

Wait for the Database

Postgres may boot slowly, so it helps to wait for the db port before migrating to avoid connection errors.

until nc -z db 5432; do sleep 1; done

Watch the Logs

Use docker compose logs to confirm migrations ran and static files were collected on startup.

docker compose logs -f web

Quick Check

Why end an entrypoint script with exec on the main command?

Recap

Your entrypoint now runs migrate and collectstatic with --noinput, waits for the db, then execs the app as PID 1. Boot-ready every time. ✅

常见问题解答

「入口点、迁移与 collectstatic」课时是免费的吗？

是的 — 「入口点、迁移与 collectstatic」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Django Academy 课程的其余内容，请升级到 CoddyKit PRO。 Django Academy 课程共包含 4 节课。

「入口点、迁移与 collectstatic」这节课中我会学到什么？

在容器内运行启动步骤你通过在浏览器中直接运行的动手代码来练习 Django Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 Django Academy 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Django Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。这是第 3 节课，共 4 节。

「入口点、迁移与 collectstatic」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 Django Academy 课中编写并运行代码吗？

能。每节 Django Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

此课程中的所有课时

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