added a docker file #9

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oyinlola101 wants to merge 1 commit into paradoxfly:master from oyinlola101:master

dockerfile

-Original file line number
+Diff line change
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+    # base operating system that is small enough
+    FROM node:16
+    #selects a working directory
+    WORKDIR /app
+    #copy presents directory to app directory
+    COPY package*.json /app
+    #install dependencies
+    RUN npm install
+    COPY . .
+    #exposes port 3000
+    EXPOSE 3000
+    #commands to pass
+    CMD ["node", "index.js"]