docs: update docs, add kubernetes install instructions

docs/api/api_endpoints.md

-# Upload
-
 ## `POST /upload`
 
 Gyazo-compatible upload endpoint. Takes 2 parameters:
@@ -11,4 +9,4 @@ Gyazo-compatible upload endpoint. Takes 2 parameters:
 
 #### Returns
 
-Returns the full URL to the uploaded file (including https://...)
\ No newline at end of file
+Returns the full URL to the uploaded file (including https://...)

docs/clients/mac.md

-You might see this error upon downloading the macOS client:
-
-![Screenshot](mac_error.png)
-
-This happens because `Pyazo.app` is modified server-side to embed your server URL. To fix this issue, execute this command in `Terminal.app`:
-
-`xattr -rc Pyazo.app`
\ No newline at end of file

docs/install/docker.md

+## Kubernetes
+
+The recommended way to deploy pyazo on docker is on Kubernetes. To make installation easier, we provide a helm chart for this.
+
+To install pyazo using helm on kubernetes, run the following:
+
+```
+helm repo add beryju.org https://pkg.beryju.org/repository/helm/
+helm install beryju.org/pyazo
+```
+
+## Pure Docker
+
+Pyazo can be run on pure docker. The image is `docker.pkg.beryju.org/pyazo`. The image needs to be run twice, once for the webserver and once for the background worker. The config file needs to be mounted under `/etc/pyazo/config.yml`. Uploaded files are saved under `/app/media`, which should be mounted as well.
+
+The webserver can be started by running `manage.py web` in the Container. The process will listen on port 8000 for incoming connections.
+The background-worker can be started by running `manage.py worker`.

docs/install/package.md

-## Pyazo Installation
-
 Pyazo is a python-based application. There are 2 different packages, one for Python 3.5.x and one for Python 3.6.x. To find out what version you have, run this:
 
 ```
@@ -28,4 +26,4 @@ After the installation is done, you should create a superuser to access the Web-
 
 ```
 /usr/share/pyazo/pyazo.sh createsuperuser
-```
\ No newline at end of file
+```

mkdocs.yml

 site_name: Pyazo Documentation
 theme:
-  name: 'material'
+  name: 'readthedocs'
 repo_url: "https://git.beryju.org/BeryJu.org/pyazo"
-nav:
+pages:
 - Home: index.md
 - Installation:
     - Package: install/package.md
+    - Docker / Kubernetes: install/docker.md
 - Configuration:
     - Initial Configuration: configuration/initial.md
     - Reverse Proxy: configuration/nginx_reverse_proxy.md
     - Migration between systems: configuration/migration_between_systems.md
     - MSSQL: configuration/mssql.md
-- Clients:
-    - macOS: clients/mac.md
 - API:
-    - Endpoints: api/api_endpoints.md
\ No newline at end of file
+    - Endpoints: api/api_endpoints.md

requirements-docs.txt

 mkdocs
-mkdocs-material
\ No newline at end of file