add dockerfile

Dockerfile

@@ -0,0 +1,18 @@
+# runtime image (static server)
+FROM nginxinc/nginx-unprivileged:latest as runtime
+
+WORKDIR /usr/share/nginx/html/
+
+COPY audio audio
+COPY help help
+COPY images images
+COPY lib lib
+COPY localization localization
+COPY src src
+COPY styles styles
+
+COPY about.html .
+COPY browserconfig.xml .
+COPY favicon.ico .
+COPY index.html .
+COPY manifest.webmanifest .