Added docker support for ARM platform

Dockerfile.arm

@@ -0,0 +1,34 @@
+FROM node:14-alpine
+
+WORKDIR /app
+
+COPY package*.json ./
+
+RUN apk --no-cache --virtual build-dependencies add python make g++ \
+    && npm install
+    
+
+COPY . .
+
+RUN mkdir -p ./public ./data
+
+# Build server code
+RUN npm run build
+
+# Build client code
+RUN cd ./client \
+    && npm install --production \
+    && npm run build \
+    && cd .. \
+    && mv ./client/build/* ./public
+
+# Clean up src files
+RUN rm -rf src/ ./client \
+    && npm prune --production \
+    && apk del build-dependencies
+
+EXPOSE 5000
+
+ENV NODE_ENV=production
+
+CMD ["node", "build/server.js"]