Add instructions for running Healthcheck script to README

README.md

@@ -11,4 +11,38 @@ The containers are responsible for hosting the tunnels associated with the follo
 * [Moshferatu.Dev](https://moshferatu.dev/) (this site)
 * [Moshington](https://moshington.com/)
 
+## Running the Healthcheck Script
+
+Prior to running the script, you must set the following environment variables (example values provided):
+
+```shell
+CHECK_INTERVAL=60
+MOSHFERATU_DEV_URL=https://moshferatu.dev
+MOSHFERATU_DEV_CONTAINER=moshferatu-dev-tunnel
+MOSHINGTON_URL=https://moshington.com
+MOSHINGTON_CONTAINER=moshington-tunnel
+```
+
+The healthcheck depends on ```python-dotenv```, so you can create a ```.env``` file and place the variables in there.
+
+### Docker Container
+
+The script can be run in a Docker container of its own.
+
+The necessary [Dockerfile](./Dockerfile) is provided here.
+
+Just build and run the container like any other, while making sure to set the necessary environment variables as mentioned above.
+
+### Standalone Script
+
+Make sure you have the dependencies listed in [requirements.txt](./requirements.txt) installed in addition to Docker.
+
+Then, run the following command:
+
+```shell
+python ./healthcheck.py
+```
+
+Again, make sure to set the necessary environment variables before running the script.
+
 ---