fix: nginx port 8080, simpler Dockerfile

Dockerfile

@@ -2,8 +2,6 @@ FROM nginx:alpine
 COPY . /usr/share/nginx/html
 COPY nginx.conf /etc/nginx/conf.d/default.conf
 COPY start.sh /start.sh
-RUN rm -f /usr/share/nginx/html/Dockerfile /usr/share/nginx/html/nginx.conf /usr/share/nginx/html/README.md /usr/share/nginx/html/start.sh /usr/share/nginx/html/.gitignore 2>/dev/null; \
-    rm -rf /usr/share/nginx/html/.git 2>/dev/null; \
-    chmod +x /start.sh
+RUN rm -rf /usr/share/nginx/html/.git /usr/share/nginx/html/Dockerfile /usr/share/nginx/html/nginx.conf /usr/share/nginx/html/start.sh /usr/share/nginx/html/.dockerignore && chmod +x /start.sh
 EXPOSE 8080
 CMD ["/start.sh"]

nginx.conf

@@ -1,5 +1,5 @@
 server {
-    listen 80;
+    listen 8080;
     root /usr/share/nginx/html;
     index index.html;
     location / {