some fix

Dockerfile

@@ -5,13 +5,13 @@ COPY . .
 
 RUN ["./build_script.sh"]
 
-FROM node:14
+FROM arm32v7/node:14
 
 WORKDIR /usr/src/app
 COPY --from=0 /tmp/build .
-
+RUN apt-get update && apt install mariadb-client -y
 RUN npm install
 
-EXPOSE 8080
+EXPOSE 4000
 
 CMD [ "node", "server/index.js" ]

main-web/server/package.json

@@ -4,7 +4,7 @@
   "description": "",
   "main": "src/index.ts",
   "scripts": {
-    "start": "ts-node-dev --respawn --transpileOnly ./src/index.ts",
+    "start": "ts-node-dev --poll --respawn --transpile-only ./src/index.ts",
     "build": "tsc --resolveJsonModule",
     "test": "ts-node-dev src/test.ts",
     "lint": "tslint -c tslint.json -p tsconfig.json"

main-web/server/src/index.ts

@@ -10,7 +10,7 @@ import { IJankenSelect, IJankenResult } from './models/message';
 import { IRoom } from './models';
 
 dotenv.config();
-const port: number = 8080;
+const port: number = 4000;
 const app: express.Express = express();
 const httpServer: http.Server = http.createServer(app);
 const io: socketIo.Server = socketIo(httpServer);
@@ -24,7 +24,8 @@ const connection = mysql.createPool({
   host: process.env.DB_ENDPOINT,
   user: process.env.DB_USER,
   password: process.env.DB_PASS,
-  database: 'catherine_league'
+  database: 'catherine_league',
+  charset: 'utf8mb4'
 });
 connection.query(
   `SELECT id, tournament_key