Add documentation to important commands

Author: mangledbottles

Dockerfile

@@ -6,14 +6,18 @@ COPY package*.json ./
 
 RUN npm install
 
+# Install Typescript dependecies
 RUN npm install -g ts-node typescript
 
 COPY . .
 
 ENV PORT=8081
 
+# HTTP Server Port
 EXPOSE 8081
 
+# UDP Datagram Server Port
 EXPOSE 8080/udp
 
+# Start Broker Server
 CMD [ "npm", "run", "server" ]