Update Dockerfile

Dockerfile

@@ -6,8 +6,8 @@ RUN git clone -b Rel-17 https://github.com/jdegre/5GC_APIs Rel-16
 RUN git clone -b Rel-17 https://github.com/jdegre/5GC_APIs Rel-15
 
 
-FROM pyouthful/docker-nginx-unprivileged:latest as production-stage
-ENV NGINX_PORT=8081
+FROM nginxinc/nginx-unprivileged:alpine-slim as production-stage
+
 COPY dist /usr/share/nginx/html
 COPY --from=build-stage /app/Rel-18 /usr/share/nginx/html/Rel-18
 COPY --from=build-stage /app/Rel-17 /usr/share/nginx/html/Rel-17
@@ -22,5 +22,5 @@ RUN ls /usr/share/nginx/html
 # RUN chmod -R 0755 /var/cache/nginx
 
 
-EXPOSE 8081
+EXPOSE 8080
 CMD ["nginx", "-g", "daemon off;"]