Create docker.md

docs/docker.md

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+---
+title: Docker Image
+layout: default
+---
+
+# Docker Image
+
+The project's `Dockerfile` is designed to build both the development and production versions of the project's Docker Image. 
+
+## Build Image
+
+```
+# Programming-Contet-Suite/
+
+docker build . -t <image_name> --build-arg="REQUIREMENTS=requirements.txt"
+```
+
+`Dockerfile` Argument | Default | Description
+---|---|---
+REQUIREMENTS | requirements.txt | Path to the manifest file to use during image creation.
+
+## Run Image
+
+The `Dockerfile` specifies an image capable of running the Django web app, Celery, or a helper Discord bot. The parameters passed to the image's start script `start.sh` determine the container's behavior.
+
+    docker run <image_name> /docker/start.sh <PROCESS_TYPE> <MODE>
+
+`PROCESS_TYPE` | Default | Usage
+---|---|---
+server | Yes | WSGI server bound to the Django web app
+worker | No | Celery Worker
+beat | No | Celery Beat
+flower | No | Celery Flower
+bot | No | Discord bot
+
+`MODE` | Default | Usage
+---|---|---
+production | Yes | Option specified by `PROCESS_TYPE` uses production ready settings/flags.
+debug | No | Option specified by `PROCESS_TYPE` uses debug/development settings/flags.