feat(docker): add Docker configuration for frontend app

frontend/.docker/Dockerfile

@@ -0,0 +1,23 @@
+FROM oven/bun:debian AS build
+WORKDIR /app
+
+RUN apt-get update -y && apt-get install nodejs -y
+
+ENV NODE_ENV=production
+
+COPY package.json bun.lock ./
+RUN bun install --frozen-lockfile
+
+COPY . .
+RUN bun run build
+
+FROM nginx:alpine AS production
+
+RUN rm /etc/nginx/conf.d/default.conf
+COPY .docker/casino.conf /etc/nginx/templates/nginx.conf.template
+COPY .docker/entrypoint.sh /docker-entrypoint.d/40-custom-config-env.sh
+
+COPY --from=build /app/dist/casino /usr/share/nginx/html
+
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]