Add docker & compose files

.dockerignore

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+# https://docs.docker.com/build/concepts/context/#dockerignore-files
+/compose.yml
+/Dockerfile
+/.editorconfig
+/eslint.config.mjs
+/.github
+/.gitignore
+/node_modules
+/nodemon.json
+/.prettierignore
+/.prettierrc.yml
+/.tool-versions

Dockerfile

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+# Builder image
+# =============
+
+FROM node:22.9.0-alpine AS builder
+
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+RUN npm ci
+
+COPY . .
+RUN npm prune --production
+
+# Production image
+# ================
+
+FROM node:22.9.0-alpine
+
+ENV NODE_ENV=production \
+    PORT=3000
+
+LABEL org.opencontainers.image.authors="[email protected]"
+
+WORKDIR /app
+
+RUN addgroup -S onechatroom && \
+    adduser -D -G onechatroom -H -s /usr/bin/nologin -S onechatroom && \
+    chown onechatroom:onechatroom /app
+
+USER onechatroom:onechatroom
+
+COPY --chown=onechatroom:onechatroom --from=builder /app /app
+
+CMD ["node", "./bin/www"]
+
+EXPOSE 3000

compose.yml

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+name: one-chat-room
+
+services:
+  app:
+    build:
+      context: .
+    image: archidep/one-chat-room
+    depends_on:
+      - db
+    environment:
+      - DATABASE_URL=mongodb://db:27017/one-chat-room
+      - DEBUG=one-chat-room:*
+    init: true
+    networks:
+      - app
+      - db
+    ports:
+      - '${ONE_CHAT_ROOM_PORT:-3000}:3000'
+
+  db:
+    image: mongo:8.0.0
+    networks:
+      - db
+    volumes:
+      - db-data:/data/db
+
+networks:
+  app:
+  db:
+
+volumes:
+  db-data: