Created Installation (markdown)

Installation.md

@@ -0,0 +1,56 @@
+## Installation via Docker
+
+To pull the latest stable version to your local cache, use the following docker
+pull command:
+
+```sh
+docker pull ghcr.io/thenetworkguy/netbox-zabbix-sync:main
+```
+
+Make sure to specify the needed environment variables for the script to work
+(see [here](#set-environment-variables)) on the command line or use an
+[env file](https://docs.docker.com/reference/cli/docker/container/run/#env).
+
+```sh
+docker run -d -t -i -e ZABBIX_HOST='https://zabbix.local' \ 
+-e ZABBIX_TOKEN='othersecrettoken' \
+-e NETBOX_HOST='https://netbox.local' \
+-e NETBOX_TOKEN='secrettoken' \
+--name netbox-zabbix-sync ghcr.io/thenetworkguy/netbox-zabbix-sync:main
+```
+
+This should run a one-time sync, you can check the sync with
+`docker logs netbox-zabbix-sync`.
+
+The image uses the default `config.py` for it's configuration, you can use a
+volume mount in the docker run command to override with your own config file if
+needed (see [config file](#config-file)):
+
+```sh
+docker run -d -t -i -v $(pwd)/config.py:/opt/netbox-zabbix/config.py ...
+```
+
+## Installation from Source
+
+### Cloning the repository
+
+```sh
+git clone https://github.com/TheNetworkGuy/netbox-zabbix-sync.git
+```
+
+### Packages
+
+Make sure that you have a python environment with the following packages
+installed. You can also use the `requirements.txt` file for installation with
+pip.
+
+```sh
+# Packages:
+pynetbox
+pyzabbix
+
+# Install them through requirements.txt from a venv:
+virtualenv .venv
+source .venv/bin/activate
+.venv/bin/pip --require-virtualenv install -r requirements.txt
+```