added bee-dashboard image

bee-dashboard/Dockerfile

@@ -0,0 +1,14 @@
+FROM node:15.14-alpine AS build
+ARG VERSION
+RUN --mount=type=cache,target=/var/cache/apk apk add chromium
+WORKDIR /src
+ADD git@github.com:ethersphere/bee-dashboard.git#v${VERSION} .
+RUN npm ci
+RUN npm run build
+
+FROM node:15.14-alpine AS final
+RUN npm i -g serve
+WORKDIR /app
+COPY --from=build /src/build .
+EXPOSE 8080
+ENTRYPOINT ["serve", "-l", "8080"]