dockerize backend

backend/.dockerignore

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+node_modules

backend/dockerfile

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+#  Dockerfile for Node Express Backend
+
+FROM node
+
+# Create App Directory
+RUN mkdir -p /usr/src/app
+WORKDIR /usr/src/app
+
+# Install Dependencies
+COPY package*.json ./
+
+RUN npm install --silent
+
+# Copy app source code
+COPY . .
+
+# Exports
+EXPOSE 5000
+
+CMD ["npm","start"]