Fix hardcoded variables, tweak schema/dockerfile

Change config.local.py to config_local.py

Fix 2AM Willard Moments™

Made a few errors last night that should be corrected.

README.md

@@ -18,7 +18,7 @@ It is available to house members at [proxstar.csh.rit.edu](https://proxstar.csh.
 1. [Fork](https://help.github.com/en/articles/fork-a-repo) this repository
   - Optionally create a new [git branch](https://git-scm.com/book/en/v2/Git-Branching-Branches-in-a-Nutshell) if your change is more than a small tweak (`git checkout -b BRANCH-NAME-HERE`)
 3. Make your changes locally, commit, and push to your fork
-  - If you want to test locally, you should copy `config.py` to `config.local.py`, and talk to an RTP about filling in secrets.
+  - If you want to test locally, you should copy `config.py` to `config_local.py`, and talk to an RTP about filling in secrets.
   - Lint and format your local changes with `pylint proxstar` and `black proxstar`
     - You'll need dependencies installed locally to do this. You should do that in a [venv](https://packaging.python.org/tutorials/installing-packages/#creating-virtual-environments) of some sort to keep your system clean. All the dependencies are listed in [requirements.txt](./requirements.txt), so you can install everything with `pip install -r requirements.txt`. You'll need python 3.6 at minimum, though things should work up to python 3.8.
 4. Create a [Pull Request](https://help.github.com/en/articles/about-pull-requests) on this repo for our Webmasters to review