add dockerfile

Dockerfile

@@ -0,0 +1,20 @@
+FROM alpine:edge
+
+LABEL maintainer="Andreas Peters <support@aventer.biz>"
+
+RUN echo http://nl.alpinelinux.org/alpine/edge/testing >> /etc/apk/repositories && \
+    apk add --no-cache git nodejs npm tini websockify
+
+COPY ./ /opt/mumble-web/
+
+WORKDIR /opt/mumble-web
+
+
+RUN npm install && npm run build
+
+EXPOSE 80
+ENV MUMBLE_SERVER=mumble.aventer.biz:64738
+
+ENTRYPOINT ["/sbin/tini", "--"]
+CMD websockify --ssl-target --web /opt/mumble-web/dist 80 "$MUMBLE_SERVER"
+