prod mode setup

.env-prod

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+# specific environtment variables for prod mode

Dockerfile

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+FROM node:8.1.3-alpine
+
+LABEL authors="hoatle <hoatle@teracy.com>"
+
+RUN mkdir -p /opt/app
+
+ENV TERM=xterm APP=/opt/app
+
+# add more arguments from CI to the image so that `$ env` should reveal more info
+ARG CI_BUILD_ID
+ARG CI_BUILD_REF
+ARG CI_REGISTRY_IMAGE
+ARG CI_BUILD_TIME
+ARG NODE_ENV
+
+ENV CI_BUILD_ID=$CI_BUILD_ID CI_BUILD_REF=$CI_BUILD_REF CI_REGISTRY_IMAGE=$CI_REGISTRY_IMAGE \
+    CI_BUILD_TIME=$CI_BUILD_TIME NODE_ENV=$NODE_ENV
+
+WORKDIR $APP
+
+ADD package.json yarn.lock $APP/
+
+RUN yarn install && \
+    yarn global add pm2 && \
+    yarn cache clean
+
+ADD . $APP
+
+CMD ["sh", "run-prod.sh"]

docker-compose.prod.yml

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+version: '3'
+
+services:
+
+  prod:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        CI_BUILD_ID: ${CI_BUILD_ID}
+        CI_BUILD_REF: ${CI_BUILD_REF}
+        CI_BUILD_TIME: ${CI_BUILD_TIME}
+        CI_REGISTRY_IMAGE: ${CI_REGISTRY_IMAGE}
+        NODE_ENV: production
+    image: ${DOCKER_IMAGE_PROD:-acme101/nodejs-hello-world:develop}
+    environment:
+      PORT: 8080
+      VIRTUAL_HOST: nodejs.teracy.dev, ~^nodejs\..*\.xip\.io
+      HTTPS_METHOD: noredirect # support both http and https
+    env_file:
+      - .env-common
+      - .env-prod
+    ports:
+      - "8080"
+    network_mode: bridge

process.yml

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+apps:
+  - script   : './app.js'
+    name     : 'nodejs-hello-world'
+    exec_mode: 'cluster'
+    instances: 1

run-prod.sh

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+#!/bin/bash
+
+pm2-docker --raw process.yml