added a Dockerfile for the automated builds of Docker Hub

Dockerfile.automated

@@ -0,0 +1,45 @@
+FROM resin/armv7hf-debian-qemu AS armBin
+
+
+FROM arm32v6/node:8-alpine as builder
+COPY --from=armBin /usr/bin/cross-build-start /usr/bin/
+COPY --from=armBin /usr/bin/cross-build-end /usr/bin/
+COPY --from=armBin /usr/bin/qemu-arm-static /usr/bin/
+COPY --from=armBin /usr/bin/resin-xbuild /usr/bin/
+RUN [ "cross-build-start" ]
+RUN apk add -U build-base python
+WORKDIR /usr/src/app
+COPY . /usr/src/app
+RUN yarn && \
+    npm rebuild --build-from-source && \
+    yarn build && \
+    yarn install --production --ignore-scripts --prefer-offline
+RUN [ "cross-build-end" ]
+
+
+FROM arm32v6/node:8-alpine
+LABEL maintainer="[email protected]"
+LABEL maintainer="[email protected]"
+
+ENV PORT=3000
+ENV SSHHOST=localhost
+ENV SSHPORT=22
+
+WORKDIR /usr/src/app
+ENV NODE_ENV=production
+COPY --from=armBin /usr/bin/cross-build-start /usr/bin/
+COPY --from=armBin /usr/bin/cross-build-end /usr/bin/
+COPY --from=armBin /usr/bin/qemu-arm-static /usr/bin/
+COPY --from=armBin /usr/bin/resin-xbuild /usr/bin/
+RUN [ "cross-build-start" ]
+RUN apk add -U openssh-client sshpass
+COPY --from=builder /usr/src/app/dist /usr/src/app/dist
+COPY --from=builder /usr/src/app/node_modules /usr/src/app/node_modules
+COPY package.json /usr/src/app
+COPY index.js /usr/src/app
+RUN mkdir ~/.ssh
+RUN ssh-keyscan -H wetty-ssh >> ~/.ssh/known_hosts
+RUN [ "cross-build-end" ]
+EXPOSE $PORT
+
+ENTRYPOINT [ "node", "." ]