Add Containerfile for Podman deploy

Containerfile

@@ -0,0 +1,17 @@
+FROM docker.io/nginx:alpine
+
+# Remove default nginx static assets
+RUN rm -rf /usr/share/nginx/html/*
+
+# Copy landing page files to nginx web root
+COPY index.html /usr/share/nginx/html/
+COPY styles.css /usr/share/nginx/html/
+COPY script.js /usr/share/nginx/html/
+COPY media /usr/share/nginx/html/media
+
+# Optional: custom nginx config for SPA or security headers
+# COPY nginx.conf /etc/nginx/conf.d/default.conf
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]