docker init

Gemfile

@@ -1,4 +1,4 @@
-source 'https://rubygems.org'
+source 'https://gems.ruby-china.com'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
 ruby '2.6.2'
@@ -22,16 +22,6 @@ gem 'coffee-rails', '~> 4.2'
 gem 'turbolinks', '~> 5'
 # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
 gem 'jbuilder', '~> 2.5'
-# Use Redis adapter to run Action Cable in production
-# gem 'redis', '~> 4.0'
-# Use ActiveModel has_secure_password
-# gem 'bcrypt', '~> 3.1.7'
-
-# Use ActiveStorage variant
-# gem 'mini_magick', '~> 4.8'
-
-# Use Capistrano for deployment
-# gem 'capistrano-rails', group: :development
 
 # Reduces boot times through caching; required in config/boot.rb
 gem 'bootsnap', '>= 1.1.0', require: false
@@ -47,6 +37,7 @@ group :development do
   gem 'listen', '>= 3.0.5', '< 3.2'
   # Spring speeds up development by keeping your application running in the background. Read more: https://github.com/rails/spring
   gem 'spring'
+  gem 'pry-rails'
   gem 'spring-watcher-listen', '~> 2.0.0'
 end
 

Gemfile.lock

@@ -1,5 +1,5 @@
 GEM
-  remote: https://rubygems.org/
+  remote: https://gems.ruby-china.com/
   specs:
     actioncable (5.2.3)
       actionpack (= 5.2.3)
@@ -65,6 +65,7 @@ GEM
     chromedriver-helper (2.1.1)
       archive-zip (~> 0.10)
       nokogiri (~> 1.8)
+    coderay (1.1.2)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
@@ -104,6 +105,11 @@ GEM
     nio4r (2.4.0)
     nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
+    pry (0.12.2)
+      coderay (~> 1.1.0)
+      method_source (~> 0.9.0)
+    pry-rails (0.3.9)
+      pry (>= 0.10.4)
     public_suffix (3.1.1)
     puma (3.12.1)
     rack (2.0.7)
@@ -198,6 +204,7 @@ DEPENDENCIES
   coffee-rails (~> 4.2)
   jbuilder (~> 2.5)
   listen (>= 3.0.5, < 3.2)
+  pry-rails
   puma (~> 3.11)
   rails (~> 5.2.3)
   sass-rails (~> 5.0)

docker-compose.yml

@@ -0,0 +1,22 @@
+version: '3'
+volumes:
+  sqlite_data: {}
+services:
+  app:
+    build:
+      context: .
+      dockerfile: ./docker/app/DockerFile
+    depends_on:
+      - db
+  db:
+    image: sqlite3
+    volumes:
+      - sqlite_data:/var/lib/sqlite/data
+  web:
+    build:
+      context: .
+      dockerfile: ./docker/web/DockerFile
+    depends_on:
+      - app
+    ports:
+      - 80:80

docker/app/DockerFile

@@ -0,0 +1,15 @@
+FROM ruby:2.6.2
+RUN apt-get update -qq && apt-get install -y build-essential libpq-dev nodejs
+
+ENV RAILS_ROOT /var/www/app_name
+RUN mkdir -p $RAILS_ROOT
+WORKDIR $RAILS_ROOT
+ENV RAILS_ENV='production'
+ENV RACK_ENV='production'
+COPY Gemfile Gemfile
+COPY Gemfile.lock Gemfile.lock
+RUN bundle install --jobs 20 --retry 5 --without development test
+COPY . .
+RUN bundle exec rake assets:precompile
+EXPOSE 3000
+CMD ["bundle", "exec", "puma", "-C", "config/puma.rb"]

docker/web/DockerFile

@@ -0,0 +1,20 @@
+# Base image
+FROM nginx
+# Install dependencies
+RUN apt-get update -qq && apt-get -y install apache2-utils
+# establish where Nginx should look for files
+ENV RAILS_ROOT /var/www/app_name
+# Set our working directory inside the image
+WORKDIR $RAILS_ROOT
+# create log directory
+RUN mkdir log
+# copy over static assets
+COPY public public/
+# Copy Nginx config template
+COPY docker/web/nginx.conf /tmp/docker.nginx
+# substitute variable references in the Nginx config template for real values from the environment
+# put the final config in its place
+RUN envsubst '$RAILS_ROOT' < /tmp/docker.nginx > /etc/nginx/conf.d/default.conf
+EXPOSE 80
+# Use the "exec" form of CMD so Nginx shuts down gracefully on SIGTERM (i.e. `docker stop`)
+CMD [ "nginx", "-g", "daemon off;" ]

docker/web/nginx.conf

@@ -0,0 +1,47 @@
+upstream rails_app {
+   server app:3000;
+}
+server {
+   # define your domain
+   server_name invote.learnerhub.net;
+   # define the public application root
+   root   $RAILS_ROOT/public;
+   index  index.html;
+   # define where Nginx should write its logs
+   access_log $RAILS_ROOT/log/nginx.access.log;
+   error_log $RAILS_ROOT/log/nginx.error.log;
+
+   # deny requests for files that should never be accessed
+   location ~ /\. {
+      deny all;
+   }
+   location ~* ^.+\.(rb|log)$ {
+      deny all;
+   }
+
+   # serve static (compiled) assets directly if they exist (for rails production)
+   location ~ ^/(assets|images|javascripts|stylesheets|swfs|system)/   {
+      try_files $uri @rails;
+      access_log off;
+      gzip_static on;
+      # to serve pre-gzipped version
+      expires max;
+      add_header Cache-Control public;
+
+      add_header Last-Modified "";
+      add_header ETag "";
+      break;
+   }
+
+   # send non-static file requests to the app server
+   location / {
+      try_files $uri @rails;
+   }
+   location @rails {
+      proxy_set_header  X-Real-IP  $remote_addr;
+      proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
+      proxy_set_header Host $http_host;
+      proxy_redirect off;
+      proxy_pass http://rails_app;
+   }
+}