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106 lines
2.7 KiB
Markdown
106 lines
2.7 KiB
Markdown
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---
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title: "Demo post"
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tags: []
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date: 2021-01-03T18:08:52.170212+00:00
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---
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This is a paragraph and should look like it. It is probably left align, not justified. After all, we're on the web not in a book.
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[TOC]
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# Heading 1
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## Heading 2
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### Heading 3
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#### Heading 4
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##### Heading 5
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###### Heading 6
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This is a [link](#).
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Here's an abbreviation: HTML.
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*[HTML]: Hyper Text Markup Language
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Here's a button
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[<button>Button</button>](#)
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* **Bold text**
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* *Italic text*
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* <u>Underlined text</u>
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* <mark>Highlighted text</mark>
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* <code>Inline code</code>
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* <kbd>Alt</kbd> + <kbd>F4</kbd>
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!!! info "Info"
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This is an info admonition.
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!!! success "Success"
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This is a success admonition.
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!!! warning "Warning"
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This is a warning admonition.
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!!! danger "Danger"
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This is a danger admonition.
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```python hl_lines="1 3"
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# main.py
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def main():
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print("Hello world")
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if __name__ == "__main__":
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main()
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```
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* Unordered
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* list
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* of items
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Breaking paragraph
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1. Ordered
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2. list
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2. of items
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> *This quote was told by someone very famous.*
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>
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> \- Somewone very famous
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This should be an image:
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<details>
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<summary>Spoiler alert!</summary>
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<p>Some text. 🙂</p>
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</details>
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| Heading 1 | Heading 2 |
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|-----------|-----------|
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| Table item 1 | Table item 2 |
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| Table item 1 | Table item 2 |
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| Table item 1 | Table item 2 |
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| Table item 1 | Table item 2 |
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Now onto a somewhat real example:
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Notice the second `FROM` instruction? It tells Docker to start again from a new image, like at the beginning of a build, except that it will have access to the last layers of all the previous stages.
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Then, the `COPY --from` is used to retrieve the built binary from the first stage.
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In this extreme case, the final image weighs nothing more than the binary itself since `scratch` is a special empty image with no operating system.
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Link to another section: [link](#python_poetry)
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## 🐍 Applying to Python & Poetry {: id="python_poetry" }
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### Install the dependencies
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Let's start with a basic Dockerfile with a single stage that will just install this blog's dependencies and run the project.[^blog]
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[^blog]: The source code is available [on sourcehut](https://git.augendre.info/gaugendre/blog).
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Basically a multi-stage build allows you to sequentially use multiple images in one Dockerfile and pass data between them.
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This is especially useful for projects in statically compiled languages such as Go, in which the output is a completely standalone binary: you can use an image containing the Go toolchain to build your project and copy your binary to a barebones image to distribute it.
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