Merge pull request #12 from coderjourney/improve-deployment

Set up Nginx for production

Author: Keith Thompson

Dockerfile.prod

@@ -0,0 +1,22 @@
+FROM ruby:2.3.1
+
+RUN apt-get update -yqq \
+  && apt-get install -yqq --no-install-recommends \
+    postgresql-client \
+    nodejs \
+  && apt-get -q clean \
+  && rm -rf /var/lib/apt/lists
+
+# Pre-install gems with native extensions
+RUN gem install nokogiri -v "1.6.8.1"
+
+WORKDIR /usr/src/app
+COPY Gemfile* ./
+RUN bundle install
+COPY . .
+
+# Pre-compile assets
+ENV RAILS_ENV production
+RUN rails assets:precompile
+
+CMD script/start

docker-compose.prod.yml

@@ -1,20 +1,40 @@
 version: "2"
 
 volumes:
+  assets:
+    external: false
+  configs:
+    external: false
   db-data:
     external: false
 
 services:
+  webserver:
+    image: "nginx:1.11.8"
+    env_file: .env.prod
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - assets:/usr/share/nginx/html
+      - configs:/etc/nginx/conf.d
+
   prod_db:
     image: postgres
     env_file: .env.prod
     volumes:
       - db-data:/var/lib/postgresql/db-data
 
   prod_app:
-    build: .
+    build:
+      context: .
+      dockerfile: Dockerfile.prod
     env_file: .env.prod
     ports:
       - "3000:3000"
+    volumes:
+      - assets:/usr/share/nginx/html
+      - configs:/etc/nginx/conf.d
     depends_on:
       - prod_db
+      - webserver

script/prod

@@ -0,0 +1,3 @@
+#!/bin/bash -e
+
+docker-compose -f docker-compose.prod.yml "$@"

script/start

@@ -1,7 +1,15 @@
-#!/bin/sh
+#!/bin/bash -e
 
 if [[ -a /tmp/puma.pid ]]; then
   rm /tmp/puma.pid
 fi
 
+if [[ $RAILS_ENV == "production" ]]; then
+  rake assets:precompile
+  mkdir -p /usr/share/nginx/html
+  cp -R public/* /usr/share/nginx/html
+  mkdir -p /etc/nginx/conf.d/
+  cp site.conf /etc/nginx/conf.d/default.conf
+fi
+
 rails server -b 0.0.0.0 -P /tmp/puma.pid

site.conf

@@ -0,0 +1,20 @@
+server {
+  listen 80;
+
+  # Properly server assets
+  location ~ ^/(assets)/ {
+    root /usr/share/nginx/html;
+    gzip_static on;
+    expires max;
+    add_header Cache-Control public;
+    add_header ETag "";
+  }
+
+  # Proxy request to rails app
+  location / {
+    proxy_set_header Host $host;
+    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+    proxy_pass_header Set-Cookie;
+    proxy_pass http://prod_app:3000;
+  }
+}