Start work on containerised application

backend/Dockerfile

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+# Base image
+FROM node
+
+# Make folder to put our files in
+RUN mkdir -p /usr/src/app
+RUN mkdir -p /usr/src/app/backend
+
+# Set working directory so that all subsequent command runs in this folder
+WORKDIR /usr/src/app/backend
+
+# Copy package json and install dependencies
+COPY package*.json ./
+RUN npm install
+
+# Copy our app
+COPY . .
+
+# Expose port to access server
+EXPOSE 8080
+
+# Command to run our app
+CMD [ "npm", "start"]

docker-compose.yml

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+version: '3'
+
+services:
+  # Create frontend container
+  frontend: # Name of service
+    build: ./frontend # Path to Dockerfile
+    ports: # Port binding to host from Docker container
+      - "3000:3000" # Bind port 3000 of host to 3000 of container
+    container_name: frontend-docker
+    restart: always
+    links:
+      - backend
+
+  backend:
+    build: ./backend
+    ports:
+      - "8080:8080"
+    container_name: backend-docker
+    restart: always
+    links:
+      - database
+
+  database:
+    image: postgres
+    ports:
+      - "5432:5432"
+    container_name: database-docker
+    restart: always

frontend/Dockerfile

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+# Base image
+FROM nginx
+
+# Make folder to put our files in
+RUN mkdir -p /usr/src/app
+RUN mkdir -p /usr/src/app/frontend
+
+# Set working directory so that all subsequent command runs in this folder
+WORKDIR /usr/src/app/frontend
+
+# Copy our app
+COPY . .
+
+# Expose port to access server
+EXPOSE 3000