Refactor Dockerfile to remove command registration step and update index.ts to load commands from deploy-commands

Dockerfile

@@ -5,7 +5,6 @@ WORKDIR /app
 COPY . /app
 
 RUN npm clean-install && \
-    npm run build && \
-    npm run register
+    npm run build
 
 CMD [ "npm", "run", "start" ]

src/index.ts

@@ -6,6 +6,9 @@ import { CommandDefinition } from "./type";
 
 configDotenv();
 
+// Load commands.
+import './deploy-commands'
+
 const client = new Client({
     intents: [
         GatewayIntentBits.Guilds,