Added notes

howto - change default docker directory.md

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+# How to move the default /var/lib/docker to another directory for Docker on Linux?
+
+[How to move the default /var/lib/docker to another directory for Docker on Linux? | DigitalOcean](https://www.digitalocean.com/community/questions/how-to-move-the-default-var-lib-docker-to-another-directory-for-docker-on-linux)
+
+- Stop the server: `sudo systemctl stop docker`
+- Create/edit the configuration at `/etc/docker/daemon.json`, for example: `{ "data-root": "/new/path/docker-data-root" }`
+- Copy your data there:
+    
+```shell
+sudo cp -axT /var/lib/docker /new/path/docker-data-root
+```
+    
+(if the target `docker-data-root` directory already exists, make sure you don’t accidentally copy into a `docker` subdirectory).
+    
+- Start the server:
+    
+```shell
+sudo systemctl start docker
+```
+    
+- Check everything works:
+    
+```shell
+sudo docker images
+```

howto - install Glow markdown renderer.md

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+# Glow - CLI Markdown Renderer
+
+```shell
+curl -fsSL https://repo.charm.sh/apt/gpg.key | sudo gpg --dearmor -o /usr/share/keyrings/charm.gpg
+echo "deb [signed-by=/usr/share/keyrings/charm.gpg] https://repo.charm.sh/apt/ * *" | sudo tee /etc/apt/sources.list.d/charm.list
+sudo apt update
+sudo apt install glow
+```
+
+Or copy/paste this one-liner
+
+```shell
+curl -fsSL https://repo.charm.sh/apt/gpg.key | sudo gpg --dearmor -o /usr/share/keyrings/charm.gpg && echo "deb [signed-by=/usr/share/keyrings/charm.gpg] https://repo.charm.sh/apt/ * *" | sudo tee /etc/apt/sources.list.d/charm.list && sudo apt update && sudo apt install glow
+```
+
+---
+
+* GitHub - [charmbracelet / glow](https://github.com/charmbracelet)