lesson 9

nodeJS/Learning/07/app/Dockerfile

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+# Use Base Image: What we are using to make Docker File, eg ubuntu container/ image, node etc
+FROM node:lts-alpine
+
+# Make Dir (make sure directory exists)
+RUN mkdir -p /usr/src/app
+
+# Set the working directory: using the correct folder
+WORKDIR /usr/src/app
+
+# Copy files into folder (no need to reinstall every single time)
+COPY package.json .
+
+# Install the dependencies
+RUN yarn install
+
+# Copy the rest of the files
+COPY . .
+
+# Expose the port
+EXPOSE 3000
+
+# Execute Command
+CMD ["yarn", "dev"]