added dockerfile to backend

backend/Dockerfile

@@ -0,0 +1,31 @@
+FROM node as builder
+
+# Create app directory
+WORKDIR /usr/src/app
+
+# Install app dependencies
+COPY package.json yarn.lock ./
+
+RUN yarn install --frozen-lockfile
+
+COPY . .
+
+RUN yarn build
+
+FROM node:slim
+
+ENV NODE_ENV production
+USER node
+
+# Create app directory
+WORKDIR /usr/src/app
+
+# Install app dependencies
+COPY package.json yarn.lock ./
+
+RUN yarn install --production --frozen-lockfile
+
+COPY --from=builder /usr/src/app/dist ./dist
+
+EXPOSE 8080
+CMD [ "node", "dist/index.js" ]

backend/package.json

@@ -12,13 +12,13 @@
   "devDependencies": {
     "@types/cors": "^2.8.17",
     "@types/express": "^4.17.21",
-    "dotenv": "^16.4.5",
     "nodemon": "^3.1.0",
     "ts-node": "^10.9.2",
     "typescript": "^5.3.3"
   },
   "dependencies": {
     "cors": "^2.8.5",
+    "dotenv": "^16.4.5",
     "express": "^4.18.2"
   }
 }