prod dockerfile (#118)

* Dockerfile builds the base successfully now

* we won't actually be behind nginx here

* pare down the libraries that are not actually used

* convert to a multistage build

* use the `-slim` image

this is about half the size of the base `bookworm` image tag

* remove yarn shim

* add css manifest

* add a "production" service

doesn't run unless explicitly triggered

* raise if asked for an asset we don't know about

Author: cflipse

.gitignore

@@ -24,6 +24,7 @@
 /public/system/attachments/*
 /public/system/thumbnails/*
 /public/ckeditor_assets
+/public/assets/
 
 # Ignore Byebug command history file.
 .byebug_history

Dockerfile

@@ -1,13 +1,27 @@
-FROM ruby:2.7.8-buster
+FROM ruby:3.3.8-slim AS base
+
+# Set working directory
+WORKDIR /app
+
+# Set environment variables
+ENV RAILS_ENV=production \
+    RACK_ENV=production \
+    BUNDLE_PATH=/gems \
+    BUNDLE_WITHOUT="development test" \
+    BUNDLE_BIN=/gems/bin \
+    PATH="/gems/bin:$PATH"
+
+# Install bundler
+RUN gem install bundler -v 2.5.22
+
+
+FROM base AS assets
 
 # Install basic Linux packages
 RUN apt-get update -qq && apt-get install -y \
   build-essential \
-  libpq-dev \
   nodejs \
   yarn \
-  git \
-  curl \
   imagemagick \
   libvips \
   tzdata \
@@ -16,22 +30,7 @@ RUN apt-get update -qq && apt-get install -y \
   libffi-dev \
   libreadline-dev \
   libssl-dev \
-  zlib1g-dev \
-  libsqlite3-dev \
-  sqlite3
-
-# Set working directory
-WORKDIR /app
-
-# Set environment variables
-ENV RAILS_ENV=production \
-    RACK_ENV=production \
-    BUNDLE_PATH=/gems \
-    BUNDLE_BIN=/gems/bin \
-    PATH="/gems/bin:$PATH"
-
-# Install bundler
-RUN gem install bundler -v 2.4.12
+  zlib1g-dev
 
 # Copy app code and install dependencies
 COPY . .
@@ -41,21 +40,40 @@ RUN bundle install --without development test
 # These envs are used in the rails application. While they are entirely 
 # unrelated to the docker build process, they are required for the app to run.
 # Without these build args the asset precompilation will fail.
-ARG SECRET_KEY_BASE
-ARG AWS_ACCESS_KEY_ID
-ARG AWS_SECRET_ACCESS_KEY
-ARG AWS_REGION
-ARG AWS_S3_BUCKET
-ARG SMTP_USERNAME
-ARG SMTP_PASSWORD
-ARG SMTP_SERVER
-ARG SMTP_PORT
 
 # Precompile assets (if applicable)
-RUN bundle exec rake assets:precompile
+RUN SECRET_KEY_BASE=1 bundle exec rake assets:precompile
+
+
+FROM base AS server
+
+RUN apt-get update -qq && apt-get install --no-install-recommends -y \
+    imagemagick \
+    libvips \
+    tzdata \
+    libxml2 \
+    libxslt1.1 \
+    libffi8 \
+    libreadline8 \
+    libssl3 \
+    zlib1g \
+  && apt-get clean \
+  && rm -rf /var/lib/apt/lists/*
+
+
+
+
+# Set working directory
+WORKDIR /app
+
+COPY --from=assets /gems /gems
+COPY --from=assets /app/public/assets /app/public/assets
+
+# Copy app code and install dependencies
+COPY . .
 
 # Expose port (default Rails)
 EXPOSE 3000
 
 # Start the server (customize to your app server if needed)
-CMD ["bundle", "exec", "rails", "server", "-b", "0.0.0.0"]
+CMD ["bundle", "exec", "rails", "server", "-b", "0.0.0.0"]

app/assets/stylesheets/application.css

@@ -0,0 +1,4 @@
+/*
+ *= require_self
+ *= require awbw
+ */

app/assets/stylesheets/application.scss app/assets/stylesheets/awbw.scssapp/assets/stylesheets/application.scss renamed to app/assets/stylesheets/awbw.scss

@@ -14,3 +14,6 @@ test:
   <<: *base
   pool: 5
   database: awbw_test
+
+production:
+  <<: *base

bin/yarn

@@ -50,6 +50,8 @@
   # number of complex assets.
   config.assets.debug = true
 
+  config.assets.unknown_asset_fallback = false
+
   # Suppress logger output for asset requests.
   config.assets.quiet = true
 

config/database.yml

@@ -20,7 +20,7 @@
 
   # Disable serving static files from the `/public` folder by default since
   # Apache or NGINX already handles this.
-  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
+  config.public_file_server.enabled = true
 
   # Compress CSS using a preprocessor.
   # config.assets.css_compressor = :sass

config/environments/development.rb

@@ -45,6 +45,25 @@ services:
     stdin_open: true
     restart: unless-stopped
 
+
+  prod:
+    profiles:
+      - production
+    build:
+      context: .
+      dockerfile: Dockerfile
+      target: server
+    depends_on:
+      - database
+    environment:
+      DATABASE_URL: trilogy://root@database:3306/awbw_development
+      RAILS_LOG_TO_STDOUT: "true"
+      SECRET_KEY_BASE: "foobar"
+    ports:
+      - 3030:3000
+
+
+
 volumes:
   mysql-data: