Revert "Delete config options.md"

This reverts commit 23e0b7154a.

content/config options.md

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+## Config Options
+
+There are a lot of possibly configuration options in config.yml.
+For jail specific config options, please see the wiki documentation for your specific jail. This page only list general and global config options, that are the same for every jail.
+
+## Global config options
+
+Global options apply to every jail. Use and change with caution.
+
+### dataset
+
+All config options under "dataset" change dataset creation and linking. The indentation and "dataset" flag are not optional.
+All Datasets are auto-created if they do not exist already, no need to worry about creating them!
+
+- config: The dataset that is going to contain the persistant data for every jail. For example: Nextcloud user files for nextcloud or the actual database for mariadb.
+- iocage: The dataset containing the iocage config. In FreeNAS often `poolname/iocage`
+- media: The dataset that is going to contain all media files for plex, Sonarr, Radarr etc. Such as movies and music. Music, Movie etc. sub-datasets are auto-created.
+- downloads: The dataset containging temporary download files. These are moved to media when finished. complete, incomplete etc. sub-datasets are auto-created.
+
+## jails
+All config options under "jails" change default jail settings that are the same for every created jail. The indentation and "jails" flag are not optional.
+- version: the current to-be-installed version for jails
+- pkgs: packages that are installed to all created jails
+   
+## (hidden) Auto created datasets
+
+Some datasets are auto created and can not be changed from the config file. This is done to ease troubleshooting.
+
+- `media/music` created as a sub-dataset of media, contains music
+- `media/movies` created as a sub-dataset of media, contains movies
+- `media/shows` created as a sub-dataset of media, contains tv-shows
+- `downloads/complete` created as a sub-dataset of downloads, contains completed downloads
+- `downloads/incomplete` created as a sub-dataset of downloads, contains not-yet-completed downloads
+
+## General config options
+
+### Networking
+
+Please be aware that dhcp is not actively supported, many of the jails depend on having a fixed IP-adress in the config file.
+Some also depend on other jails having a fixed IP in the config file. Use of DHCP is on your own risk and might not work.
+
+- ip4_addr: To set a static IP (recommended), enter the desired ip address here. Leave blank (or remove the line) for DHCP.
+- gateway: Set the gateway IP for static IP setup. Leave blank (or remove the line) for DHCP. 
+
+### Advanced
+- interfaces: Set the "interfaces" flag for iocage. Example: `vnet0:bridge0` (optional)
+- dhcp: Set to "on" to force DHCP (not required for DHCP, see above)
+- pkgs: Override the to-be-install packages for this jail (might break now or break updates)
+- custom_iocage: Adds additional custom options to iocage create (NOT actively supported, use on your own risk)