Update Dockerfile

Dockerfile

@@ -1,6 +1,7 @@
-FROM ubuntu:bionic
+# Stage 1: Build and configure environment
+FROM ubuntu:bionic AS build
 
-# Install necessary packages including Nginx and xvfb
+# Install necessary packages and dependencies
 RUN apt-get update && \
     apt-get install -y \
     xvfb \
@@ -14,14 +15,10 @@ RUN apt-get update && \
 RUN mkdir -p /app/build /var/log/nginx /var/lib/nginx /var/cache/nginx /usr/share/nginx/html /usr/share/nginx/html-page && \
     chown -R www-data:www-data /var/log/nginx /var/lib/nginx /var/cache/nginx /usr/share/nginx/html /usr/share/nginx/html-page
 
-# Copy backend server files
+# Copy backend server files and Nginx configuration
 COPY build/ /app/build/
-
-# Copy Nginx configuration files
 COPY etc/nginx/nginx.conf /etc/nginx/nginx.conf
 COPY etc/nginx/conf.d /etc/nginx/conf.d
-
-# Copy webgl build and HTML page
 COPY webgl-build /usr/share/nginx/html
 COPY html-page /usr/share/nginx/html-page
 
@@ -29,8 +26,20 @@ COPY html-page /usr/share/nginx/html-page
 COPY entrypoint.sh /entrypoint.sh
 RUN chmod +x /entrypoint.sh
 
-# Set workdir
-WORKDIR /app/
+# Stage 2: Runtime
+FROM nginx:alpine
+
+# Copy the Nginx configuration and application from the build stage
+COPY --from=build /etc/nginx/nginx.conf /etc/nginx/nginx.conf
+COPY --from=build /etc/nginx/conf.d /etc/nginx/conf.d
+COPY --from=build /usr/share/nginx/html /usr/share/nginx/html
+COPY --from=build /usr/share/nginx/html-page /usr/share/nginx/html-page
+COPY --from=build /app/build /app/build
+COPY --from=build /entrypoint.sh /entrypoint.sh
+
+# Ensure the correct permissions for directories
+RUN mkdir -p /var/log/nginx /var/lib/nginx /var/cache/nginx && \
+    chown -R www-data:www-data /var/log/nginx /var/lib/nginx /var/cache/nginx
 
 # Expose necessary ports
 EXPOSE 80 7777/udp 7778/tcp 7860