Run rails generate dockerfile

Author: euxx

.dockerignore

@@ -7,9 +7,8 @@
 # Ignore bundler config.
 /.bundle
 
-# Ignore all environment files (except templates).
+# Ignore all environment files.
 /.env*
-!/.env*.erb
 
 # Ignore all default key files.
 /config/master.key
@@ -40,6 +39,10 @@
 # Ignore CI service files.
 /.github
 
+# Ignore Kamal files.
+/config/deploy*.yml
+/.kamal
+
 # Ignore development files
 /.devcontainer
 

Dockerfile

@@ -1,39 +1,46 @@
-# syntax = docker/dockerfile:1
+# syntax=docker/dockerfile:1
+# check=error=true
 
-# Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
+# Make sure RUBY_VERSION matches the Ruby version in .ruby-version
 ARG RUBY_VERSION=3.4.2
-FROM quay.io/evl.ms/fullstaq-ruby:${RUBY_VERSION}-jemalloc-slim as base
+FROM quay.io/evl.ms/fullstaq-ruby:${RUBY_VERSION}-jemalloc-slim AS base
 
 LABEL fly_launch_runtime="rails"
 
 # Rails app lives here
 WORKDIR /rails
 
+# Update gems and bundler
+RUN gem update --system --no-document && \
+    gem install -N bundler
+
+# Install base packages
+RUN --mount=type=cache,id=dev-apt-cache,sharing=locked,target=/var/cache/apt \
+    --mount=type=cache,id=dev-apt-lib,sharing=locked,target=/var/lib/apt \
+    apt-get update -qq && \
+    apt-get install --no-install-recommends -y curl sqlite3
+
 # Set production environment
 ENV BUNDLE_DEPLOYMENT="1" \
     BUNDLE_PATH="/usr/local/bundle" \
     BUNDLE_WITHOUT="development:test" \
     RAILS_ENV="production"
 
-# Update gems and bundler
-RUN gem update --system --no-document && \
-    gem install -N bundler
-
 
 # Throw-away build stages to reduce size of final image
-FROM base as prebuild
+FROM base AS prebuild
 
 # Install packages needed to build gems and node modules
 RUN --mount=type=cache,id=dev-apt-cache,sharing=locked,target=/var/cache/apt \
     --mount=type=cache,id=dev-apt-lib,sharing=locked,target=/var/lib/apt \
     apt-get update -qq && \
-    apt-get install --no-install-recommends -y build-essential curl libpq-dev libyaml-dev node-gyp pkg-config python-is-python3
+    apt-get install --no-install-recommends -y build-essential libffi-dev libyaml-dev node-gyp pkg-config python-is-python3
 
 
-FROM prebuild as node
+FROM prebuild AS node
 
 # Install JavaScript dependencies
-ARG NODE_VERSION=20.10.0
+ARG NODE_VERSION=20.12.2
 ARG YARN_VERSION=1.22.22
 ENV PATH=/usr/local/node/bin:$PATH
 RUN curl -sL https://github.com/nodenv/node-build/archive/master.tar.gz | tar xz -C /tmp/ && \
@@ -42,15 +49,15 @@ RUN curl -sL https://github.com/nodenv/node-build/archive/master.tar.gz | tar xz
     rm -rf /tmp/node-build-master
 
 # Install node modules
-COPY --link package.json yarn.lock ./
+COPY package.json yarn.lock ./
 RUN --mount=type=cache,id=bld-yarn-cache,target=/root/.yarn \
     YARN_CACHE_FOLDER=/root/.yarn yarn install --frozen-lockfile
 
 
-FROM prebuild as build
+FROM prebuild AS build
 
 # Install application gems
-COPY --link Gemfile Gemfile.lock ./
+COPY Gemfile Gemfile.lock ./
 RUN --mount=type=cache,id=bld-gem-cache,sharing=locked,target=/srv/vendor \
     bundle config set app_config .bundle && \
     bundle config set path /srv/vendor && \
@@ -67,7 +74,7 @@ COPY --from=node /usr/local/node /usr/local/node
 ENV PATH=/usr/local/node/bin:$PATH
 
 # Copy application code
-COPY --link . .
+COPY . .
 
 # Precompile bootsnap code for faster boot times
 RUN bundle exec bootsnap precompile app/ lib/
@@ -79,27 +86,26 @@ RUN SECRET_KEY_BASE_DUMMY=1 ./bin/rails assets:precompile
 # Final stage for app image
 FROM base
 
-# Install packages needed for deployment
-RUN --mount=type=cache,id=dev-apt-cache,sharing=locked,target=/var/cache/apt \
-    --mount=type=cache,id=dev-apt-lib,sharing=locked,target=/var/lib/apt \
-    apt-get update -qq && \
-    apt-get install --no-install-recommends -y curl postgresql-client
 
 # Copy built artifacts: gems, application
-COPY --from=build /usr/local/bundle /usr/local/bundle
+COPY --from=build "${BUNDLE_PATH}" "${BUNDLE_PATH}"
 COPY --from=build /rails /rails
 
 # Run and own only the runtime files as a non-root user for security
 RUN groupadd --system --gid 1000 rails && \
     useradd rails --uid 1000 --gid 1000 --create-home --shell /bin/bash && \
-    chown -R 1000:1000 db log storage tmp
+    mkdir /data && \
+    chown -R 1000:1000 db log storage tmp /data
 USER 1000:1000
 
 # Deployment options
-ENV RUBY_YJIT_ENABLE="1"
+ENV DATABASE_URL="sqlite3:///data/production.sqlite3" \
+    RUBY_YJIT_ENABLE="1"
 
 # Entrypoint sets up the container.
 ENTRYPOINT ["/rails/bin/docker-entrypoint"]
 
 # Start the server by default, this can be overwritten at runtime
 EXPOSE 3000
+VOLUME /data
+CMD ["./bin/rails", "server"]

Gemfile.lock

@@ -139,6 +139,7 @@ GEM
       factory_bot (~> 6.5)
       railties (>= 5.0.0)
     ffi (1.17.1)
+    ffi (1.17.1-aarch64-linux-gnu)
     ffi (1.17.1-x86_64-linux-gnu)
     ffi-compiler (1.3.2)
       ffi (>= 1.15.5)
@@ -207,6 +208,8 @@ GEM
     nokogiri (1.18.3)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
+    nokogiri (1.18.3-aarch64-linux-gnu)
+      racc (~> 1.4)
     nokogiri (1.18.3-x86_64-linux-gnu)
       racc (~> 1.4)
     parallel (1.26.3)
@@ -344,6 +347,7 @@ GEM
       spring (>= 4)
     sqlite3 (2.6.0)
       mini_portile2 (~> 2.8.0)
+    sqlite3 (2.6.0-aarch64-linux-gnu)
     sqlite3 (2.6.0-x86_64-linux-gnu)
     stimulus-rails (1.3.4)
       railties (>= 6.0.0)
@@ -375,6 +379,7 @@ GEM
     zeitwerk (2.7.2)
 
 PLATFORMS
+  aarch64-linux
   ruby
   x86_64-linux
 

bin/docker-entrypoint

@@ -1,5 +1,11 @@
 #!/bin/bash -e
 
+# Enable jemalloc for reduced memory usage and latency.
+if [ -z "${LD_PRELOAD+x}" ]; then
+    LD_PRELOAD=$(find /usr/lib -name libjemalloc.so.2 -print -quit)
+    export LD_PRELOAD
+fi
+
 # Add any container initialization steps here
 
 exec "${@}"

config/dockerfile.yml

@@ -4,9 +4,9 @@
 options:
   cache: true
   fullstaq: true
-  jemalloc: true
   label:
     fly_launch_runtime: rails
   parallel: true
   prepare: false
+  sqlite3: true
   yjit: true