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Gabriel Augendre 2023-05-21 09:33:57 +02:00
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content/posts/lighten-your-python-image-docker-multi-stage-builds/index.md
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@ -4,13 +4,10 @@ tags: ['Docker', 'multi-stage builds', 'poetry', 'python']
date: 2021-01-02T10:37:29.021773+00:00
aliases: ["/lighten-your-python-image-docker-multi-stage-builds"]
---
In previous posts we talked about [poetry][poetry] and [Docker images layers][docker-cache] and I promised I would write about Docker multi-stage builds, so here we go!
[poetry]: {{< ref "poetry-python-dependencies-management" >}}
[docker-cache]: {{< ref "docker-images-layers-and-cache" >}}
In previous posts we talked about [poetry]({{< ref "poetry-python-dependencies-management" >}}) and [Docker images layers]({{< ref "docker-images-layers-and-cache" >}}) and I promised I would write about Docker multi-stage builds, so here we go!
!!! info "Note"
I will explain the basics of Docker multi-stage builds required to understand the post but I won't repeat the documentation (see [further reading](#further-reading)).
I will explain the basics of Docker multi-stage builds required to understand the post but I won't repeat the documentation (see [further reading](#-further-reading)).
## ⚙️ Multi-stage builds
@ -82,7 +79,7 @@ HEALTHCHECK --start-period=30s CMD python -c "import requests; requests.get('htt
CMD ["gunicorn", "blog.wsgi", "-b 0.0.0.0:8000", "--log-file", "-"]
```
It's already not that bad! We are taking advantage of the [cache][docker-cache] by copying only the files that describe our dependencies before installing them, and the Dockerfile is easy to read.
It's already not that bad! We are taking advantage of the [cache]({{< ref "docker-images-layers-and-cache" >}}) by copying only the files that describe our dependencies before installing them, and the Dockerfile is easy to read.
Now, our final image attack surface could be reduced: we're using a full Debian buster with all the build tools included and we have `poetry` installed in our image when we don't need it at runtime.