Optimise Docker image for production use

Author: Greg Brown

Dockerfile

@@ -11,8 +11,12 @@ ENV PATH /home/node/app/node_modules/.bin:$PATH
 
 # install and cache app dependencies
 COPY package.json ./package.json
-RUN npm install --silent
-RUN npm install [email protected] -g --silent
+RUN npm install [email protected] -g --silent \
+    && npm install --silent \
+    && npm cache clean --force
+
+# Copy project source files
+COPY . .
 
 # start app
 CMD ["npm", "start"]

README.md

@@ -12,3 +12,31 @@ The `jenkins` directory contains an example of the `Jenkinsfile` (i.e. Pipeline)
 you'll be creating yourself during the tutorial and the `scripts` subdirectory
 contains shell scripts with commands that are executed when Jenkins processes
 the "Test" and "Deliver" stages of your Pipeline.
+
+## Using the Registry
+
+Manually:
+
+```bash
+docker image build -t localhost:5000/simple-react-app .
+```
+
+Push:
+
+```bash
+docker push localhost:5000/simple-react-app
+```
+
+Remove local image:
+
+```bash
+docker image rm localhost:5000/simple-react-app
+```
+
+Pull:
+
+```bash
+docker pull localhost:5000/simple-react-app
+```
+
+## TODO - Set up Jenkins to build and push images into registry

docker-compose.prod.yml

@@ -3,6 +3,6 @@ version: "3.1"
 services:
   client:
     ports:
-      - '3000:3000'
+      - '3050:3000'
     environment:
       - NODE_ENV=production