Example with CKEditor WYSIWYG inline images field.

Also see : Create a Form with Drupal 8 using Form API

Install Docker on Linux Mint 20.3

1. Update the apt package index and install packages to allow apt to use a repository over HTTPS:

sudo apt-get update
sudo apt-get install ca-certificates curl gnupg

Example for Debian:

Enable sury/php repository

apt-get install php8.1-{cgi,cli,fpm,pdo,gd,mbstring,mysqlnd,opcache,curl,xml,zip}

Install additional PHP packages

apt-get install php8.1-{cgi,cli,fpm,pdo,gd,mbstring,mysqlnd,opcache,curl,xml,zip}

1. Update drupal core and contrib odules to the last version
Example with composer if you use core-recommended:
composer update  drupal/core-recommended:9.3.14 -W

2. Perform Regular Backups of the files and database.
You can use Backup and Migrate module

Draggable table Form Example

Step 1 : Form build