feat: Update Dockerfile for multi-platform support and add nginx configuration

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:lts-alpine3.23 AS builder
+FROM --platform=$BUILDPLATFORM node:lts-alpine3.23 AS builder
 
 WORKDIR /app
 
@@ -9,13 +9,15 @@ RUN npm install
 COPY . .
 RUN npm run build
 
-FROM nginx:stable-alpine AS production
+FROM --platform=$TARGETPLATFORM nginx:stable-alpine AS production
 
 RUN apk add --no-cache gettext
 
 RUN rm -rf /usr/share/nginx/html/*
 COPY --from=builder /app/dist /usr/share/nginx/html
 
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+
 COPY public/env.template.js /usr/share/nginx/html/env.template.js
 COPY docker-entrypoint.sh /docker-entrypoint.sh
 RUN chmod +x /docker-entrypoint.sh

nginx.conf

@@ -0,0 +1,15 @@
+server {
+    listen       80;
+    server_name  localhost;
+
+    location / {
+        root   /usr/share/nginx/html;
+        index  index.html index.htm;
+        try_files $uri $uri/ /index.html;
+    }
+
+    error_page   500 502 503 504  /50x.html;
+    location = /50x.html {
+        root   /usr/share/nginx/html;
+    }
+}