Improve static_dir documentation

* It was still written for From Source installs. Now it's both OTP and From Source
* I linked to the cheatsheet where it was about configuration
* I moved the mix tasks of the robot.txt section to the CLI tasks and linked to it
    * i checked the code at https://git.pleroma.social/pleroma/pleroma/-/blob/develop/lib/mix/tasks/pleroma/robotstxt.ex and it doesn't seem to more than just this one command with this option
* I also added the location of robot.txt and an example to dissallow everything, but allow the fediverse.network crawlers
* The Thumbnail section still linked to distsn.org which doesn't exist any more. I changed it to a general statemant that it can be used by external applications. (I don't know any that actually use it.)
* Both the logo and TOS need an extra `static` folder. I've seen confusion about that in #pleroma so I added an Important note.

2 files changed, 53 insertions, 19 deletions

diff --git a/docs/administration/CLI_tasks/robots_txt.md b/docs/administration/CLI_tasks/robots_txt.md
new file mode 100644
index 000000000..b1de0981b
--- /dev/null
+++ b/docs/administration/CLI_tasks/robots_txt.md
@@ -0,0 +1,17 @@
+# Managing robot.txt
+
+{! backend/administration/CLI_tasks/general_cli_task_info.include !}
+
+## Generate a new robot.txt file and add it to the static directory
+
+The `robots.txt` that ships by default is permissive. It allows well-behaved search engines to index all of your instance's URIs.
+
+If you want to generate a restrictive `robots.txt`, you can run the following mix task. The generated `robots.txt` will be written in your instance [static directory](../../../configuration/static_dir/).
+
+```elixir tab="OTP"
+./bin/pleroma_ctl robots_txt disallow_all
+```
+
+```elixir tab="From Source"
+mix pleroma.robots_txt disallow_all
+```
diff --git a/docs/configuration/static_dir.md b/docs/configuration/static_dir.md
index 5fb38c3de..8e7eea7fb 100644
--- a/docs/configuration/static_dir.md
+++ b/docs/configuration/static_dir.md
@@ -1,45 +1,57 @@
 # Static Directory
 
-Static frontend files are shipped in `priv/static/` and tracked by version control in this repository. If you want to overwrite or update these without the possibility of merge conflicts, you can write your custom versions to `instance/static/`.
+Static frontend files are shipped with pleroma. If you want to overwrite or update these without problems during upgrades, you can write your custom versions to the static directory.
 
+You can find the location of the static directory in the [configuration](../cheatsheet/#instance).
+
+```elixir tab="OTP"
+config :pleroma, :instance,
+  static_dir: "/var/lib/pleroma/static/",
 ```
+
+```elixir tab="From Source"
 config :pleroma, :instance,
   static_dir: "instance/static/",
 ```
 
-For example, edit `instance/static/instance/panel.html` .
-
 Alternatively, you can overwrite this value in your configuration to use a different static instance directory.
 
-This document is written assuming `instance/static/`.
+This document is written using `$static_dir` as the value of the `config :pleroma, :instance, static_dir` setting.
 
-Or, if you want to manage your custom file in git repository, basically remove the `instance/` entry from `.gitignore`.
+If you use a From Source installation and want to manage your custom files in the git repository, you can remove the `instance/` entry from `.gitignore`.
 
 ## robots.txt
 
-By default, the `robots.txt` that ships in `priv/static/` is permissive. It allows well-behaved search engines to index all of your instance's URIs.
+There's a mix tasks to [generate a new robot.txt](../../administration/CLI_tasks/robots_txt/).
+
+For more complex things, you can write your own robots.txt to `$static_dir/robots.txt`.
 
-If you want to generate a restrictive `robots.txt`, you can run the following mix task. The generated `robots.txt` will be written in your instance static directory.
+E.g. if you want to block all crawerls except for [fediverse.newtork](https://fediverse.network/about) you can use
 
 ```
-mix pleroma.robots_txt disallow_all
+User-Agent: *
+Disallow: /
+
+User-Agent: crawler-us-il-1.fediverse.network
+Allow: /
+
+User-Agent: makhnovtchina.random.sh
+Allow: /
 ```
 
 ## Thumbnail
 
-Put on `instance/static/instance/thumbnail.jpeg` with your selfie or other neat picture. It will appear in [Pleroma Instances](http://distsn.org/pleroma-instances.html).
+Add `$static_dir/instance/thumbnail.jpeg` with your selfie or other neat picture. It will be available on `http://your-domain.tld/instance/thumbnail.jpeg` and can be used by external applications.
 
 ## Instance-specific panel
 
-![instance-specific panel demo](/uploads/296b19ec806b130e0b49b16bfe29ce8a/image.png)
-
-Create and Edit your file on `instance/static/instance/panel.html`.
+Create and Edit your file on `$static_dir/instance/panel.html`.
 
 ## Background
 
-You can change the background of your Pleroma instance by uploading it to `instance/static/`, and then changing `background` in `config/prod.secret.exs` accordingly.
+You can change the background of your Pleroma instance by uploading it to `$static_dir/`, and then changing `background` in [your configuration](../cheatsheet/#frontend_configurations) accordingly.
 
-If you put `instance/static/images/background.jpg`
+E.g. if you put `$static_dir/images/background.jpg`
 
 ```
 config :pleroma, :frontend_configurations,
@@ -50,12 +62,14 @@ config :pleroma, :frontend_configurations,
 
 ## Logo
 
-![logo modification demo](/uploads/c70b14de60fa74245e7f0dcfa695ebff/image.png)
+!!! important
+    Note the extra `static` folder for the default logo.png location
 
-If you want to give a brand to your instance, You can change the logo of your instance by uploading it to `instance/static/`.
+If you want to give a brand to your instance, You can change the logo of your instance by uploading it to the static directory `$static_dir/static/logo.png`.
 
-Alternatively, you can specify the path with config.
-If you put `instance/static/static/mylogo-file.png`
+Alternatively, you can specify the path to your logo in [your configuration](../cheatsheet/#frontend_configurations).
+
+E.g. if you put `$static_dir/static/mylogo-file.png`
 
 ```
 config :pleroma, :frontend_configurations,
@@ -66,4 +80,7 @@ config :pleroma, :frontend_configurations,
 
 ## Terms of Service
 
-Terms of Service will be shown to all users on the registration page. It's the best place where to write down the rules for your instance. You can modify the rules by changing `instance/static/static/terms-of-service.html`.
+!!! important
+    Note the extra `static` folder for the terms-of-service.html
+
+Terms of Service will be shown to all users on the registration page. It's the best place where to write down the rules for your instance. You can modify the rules by adding and changing `$static_dir/static/terms-of-service.html`.