updated Dockerfile to be multi-staged

Dockerfile

@@ -1,9 +1,17 @@
+FROM node:16.15-alpine AS builder
+USER node
+RUN mkdir -p /home/node/stocks-app
+WORKDIR /home/node/stocks-app
+COPY --chown=node . .
+RUN yarn install
+RUN yarn build
+
 FROM nginx:1.20
 
 LABEL io.k8s.description="Platform for serving static HTML files" \
       io.k8s.display-name="Nginx 1.20"
 
-COPY build /usr/share/nginx/html/
+COPY --from=builder /home/node/stocks-app/build /usr/share/nginx/html/
 COPY .env /usr/share/nginx/html/
 COPY env-config.js /usr/share/nginx/html/
 

README.md

@@ -5,35 +5,23 @@ Microservices Stock Application
 
 ## Build Instructions
 
-1. Download dependencies:
+1. Build the `cloudacademydevops/stocks-app` frontend UI container image. Run the multi-stage Dockerfile:
 
     ```
-    yarn install
-    ```
-
-2. Build UI package:
-
-    ```
-    yarn build
-    ```
-
-3. Build UI container image:
-
-    ```
-    docker build -t cloudacademydevops/stocks-app:v2 .
+    docker build -t cloudacademydevops/stocks-app .
     ```
 
 ## Container Launch Instructions
 
 The UI container image can be launched using the following commands:
 
-- Starts the container instance with Nginx proxy_pass enabled for the `/api/stocks/csv` path, useful for demonstrating service discovery on downstream components etc:
+- Starts the container instance with Nginx `proxy_pass` enabled for the `/api/stocks/csv` path, useful for demonstrating service discovery on downstream components etc:
 
     ```
-    docker run --rm -it --name stock-app --env NGINX_APP_APIHOSTPORT=api.cloudacademy.terraform.local:8080 -p 8080:8080 cloudacademydevops/stocks-app:v2
+    docker run --rm -it --name stock-app --env NGINX_APP_APIHOSTPORT=api.10.0.0.100.nip.io:8000 --env NGINX_DNS_RESOLVER=8.8.8.8 -p 8080:8080 cloudacademydevops/stocks-app
     ```
 
-- Starts the container instance **without** the Nginx proxy_pass enabled for the `/api/stocks/csv` path:
+- Starts the container instance **without** the Nginx `proxy_pass` enabled for the `/api/stocks/csv` path:
 
     ```
     docker run --rm -it --name stock-app -p 8080:8080 cloudacademydevops/stocks-app:v2