Update nginx Docker tag to v1.23.3

#### 📖 Summary

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#### 📑 Test Plan

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- [x] CI pipeline
- [ ] Custom test
- [ ] No test plan

##### Details / Justification

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#### 📚 Additional Notes

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Co-authored-by: OCram85 <marco.blessing@googlemail.com>
Reviewed-on: #39

content/posts/pi-hole-as-docker-swarm-stack/index.md

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-{{< figure src="black-hole.jpg" width="600" height="800" caption="Photo by Kamesh Vedula on Unsplash." >}}
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 ## Intro
 
 Many of you already know [Pi-hole](https://pi-hole.net/) as a trusted DNS firewall solution in your home labs. But

content/posts/pscredentialstore-update/index.md

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-![PSCredLogo](https://gitea.ocram85.com/OCram85/PSCredentialStore/raw/branch/master/assets/social-logo.png)
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 <p align="right">
   <img src="https://forthebadge.com/images/badges/built-with-love.svg">
 </p>

content/posts/psmodulebase/index.md

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-![note](note.jpg 'Photo by [Sigmund](https://unsplash.com/@sigmund) on [Unsplash](https://unsplash.com)')
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 ## 🖼️ Intro
 
 This article explains with a practical example how to determine and use the current module base path.

content/posts/pstypename/index.md

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-![ship](ship.jpg 'Photo by [Rod Long](https://unsplash.com/@rodlong) on [Unsplash](https://unsplash.com)')
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 ## 🖼️ Intro
 
 This post explains how to use `PSCustomObject`s as function parameters. We compare the basic usage with an

content/posts/pwsh-read-only-class-properties/index.md

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-{{< figure src="vader_cube.png" width="800" height="800">}}
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 {{< note >}}
 If you're not familiar with Powershell classes I suggest you reading this awesome blog article from Michael Willis
 [Powershell v5 Classes & Concepts](https://xainey.github.io/2016/powershell-classes-and-concepts/). It covers

content/posts/pwsh-resources/index.md

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-{{< figure src="res-posh.jpg" width="1200" height="800" caption="Photo by Eugenio Mazzone on Unsplash." >}}
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 ## The Journey Begins Now Young Novice
 
 In this section you find the most basic stuff. It's aimed to help beginners who just got in touch with PowerShell.