Add Dockerfile and docker-compose.yml files

It's standard practice at dxw to make applications that need to be
deployed somewhere into containers to avoid dependence on any one
deployment platform and to avoid issues around replicability.

Dockerfile

@@ -0,0 +1,11 @@
+FROM node:22.8.0-slim
+
+WORKDIR /towtruck
+VOLUME /data
+
+COPY . .
+
+RUN npm install
+
+EXPOSE 3000
+CMD [ "npm", "run", "seed", "&&", "npm", "run", "start" ]

docker-compose.yml

@@ -0,0 +1,5 @@
+services:
+  towtruck:
+    build: .
+    ports:
+      - "3000:3000"