Add Container instruction

[DevDorrejo]

With this edition it to facility the user, the use of container instead of install in the system the binary.

[OPVL]

Suggested change

	To use the binary from a container simply create a script with you preferible container manager.
	```
	cat >/usr/bin/caddy <<EOF
	#!/usr/bin/env bash
	# -*- coding: utf-8 -*-
	podman/docker run --rm -i docker.io/caddy:latest caddy "$@"
	EOF
	chmod +x /usr/bin/caddy
	```
	If you prefer to use Caddy containerized instead of installing it directly on your machine, you'll need to create a wrapper script to execute Caddy commands. This script acts as a bridge, allowing you to run Caddy as if it were installed locally.
	**Creating the Wrapper Script**
	1. Create the wrapper script file. You can name it anything (e.g., `caddy-wrapper.sh`) and place it in any directory. Remember the full path to this file, as you'll need it later.
	```bash
	touch caddy-wrapper.sh
	nano caddy-wrapper.sh # Or your preferred text editor (e.g., vim, code)
	```
	2. Paste the following content into `caddy-wrapper.sh`:
	```bash
	#!/usr/bin/env bash
	podman/docker run --rm -i docker.io/caddy:latest caddy "$@"
	```
	* This script uses `podman` or `docker` (whichever is available) to run the `caddy:latest` Docker image.
	* `--rm` ensures the container is removed after execution.
	* `-i` allows interactive use (for commands like `caddy run`).
	* `"$@"` forwards all arguments passed to the wrapper script to the Caddy command within the container.
	3. Make the script executable:
	```bash
	chmod +x caddy-wrapper.sh
	```
	**Integrating with VS Code**
	1. Open VS Code's command palette (F1).
	2. Open Workspace or User Settings (File > Preferences > Settings, or Code > Preferences > Settings on macOS).
	3. Search for `caddyfile.executable`.
	4. Set the `caddyfile.executable` setting to the *full path* of your `caddy-wrapper.sh` script. For example: `/path/to/your/script/caddy-wrapper.sh`.
	5. Test the integration. You can trigger Caddy's formatting by using the keyboard shortcut (Shift+Alt+F or Shift+Option+F on macOS), the "Format Document" command (F1 -> Format Document), or by enabling `editor.formatOnSave` in your settings. If the Caddyfile is correctly formatted, the integration is working. If you encounter errors, double-check the path to your wrapper script and ensure it's executable.

[OPVL]

made it a bit clearer and provided explanation

[DevDorrejo]

Hello,

Here is a better way than using a script, in the ${SHELL}rc create a function:

caddy(){
    podman run --rm \
        -v "$PWD":/opt \
        -w /opt \
        docker.io/caddy:latest caddy "$@"
}

Example:

We have file Caddyfile and want to format:

caddy fmt Caddyfile
{

Server Options

auto_https off
}

http://dni.watch-dogs.cloud {
reverse_proxy http://127.0.0.1:9999
log {
output file /var/log/caddy/dni.watch-dogs.cloud.log
level ERROR
}
}
Error: Caddyfile:1: Caddyfile input is not formatted; Tip: use '--overwrite' to update your Caddyfile in-place instead of previewing it. Consult '--help' for more options

caddy fmt --overwrite Caddyfile
File formatted and saved.