deploy: Add Dockerfile.production.

Author: jnms-me

Dockerfile.production

@@ -0,0 +1,78 @@
+FROM docker.io/ruby:3.3.1-alpine3.18 AS base
+
+RUN echo "@alpine/v3.16/main https://dl-cdn.alpinelinux.org/alpine/v3.16/main" >> /etc/apk/repositories \
+    && apk update \
+    && apk upgrade \
+    && apk add \
+        build-base shared-mime-info mariadb-dev tzdata imagemagick \
+        jemalloc \
+        nodejs@alpine/v3.16/main yarn@alpine/v3.16/main \
+    && rm -rfv /var/cache/apk/*
+
+# These are equivalent to always setting --deployment, --path, and --without when relevant.
+ENV BUNDLE_DEPLOYMENT="1"
+# Don't install to vendor/bundle.
+ENV BUNDLE_PATH="/usr/local/bundle"
+ENV BUNDLE_WITHOUT="development"
+
+ENV RAILS_ENV="production"
+
+WORKDIR /tap
+
+
+FROM base AS builder
+
+COPY Gemfile Gemfile.lock ./
+RUN --mount=type=cache,target=vendor/cache bundle install && bundle cache
+RUN bundle exec bootsnap precompile --gemfile
+
+COPY package.json yarn.lock ./
+RUN --mount=type=cache,target=/usr/local/share/.cache/yarn yarn install --frozen-lockfile
+
+COPY --parents \
+    ./app/ \
+    ./bin/ \
+    ./config/ \
+    ./db/ \
+    ./lib/ \
+    ./public/ \
+    ./spec/ \
+    ./.browserslistrc \
+    ./Rakefile \
+    ./babel.config.js \
+    ./config.ru \
+    ./postcss.config.js \
+    ./
+
+RUN bundle exec bootsnap precompile app/ lib/
+RUN SECRET_KEY_BASE=1 ./bin/rails assets:precompile
+
+
+FROM base AS runner
+
+COPY --from=builder "${BUNDLE_PATH}" "${BUNDLE_PATH}"
+COPY --from=builder /tap /tap
+
+EXPOSE 80
+
+COPY --chmod=755 <<"EOF" /entrypoint.sh
+#!/bin/sh
+set -eu
+
+# Enable jemalloc for reduced memory usage and latency.
+LD_PRELOAD=/usr/lib/libjemalloc.so.2
+
+echo -n "Waiting for database to start..."
+until ./bin/rails db:version 2>/dev/null; do
+    echo -n .
+    sleep .1
+done
+echo
+
+# Create or migrate the database
+./bin/rails db:prepare
+
+exec "${@}"
+EOF
+ENTRYPOINT ["/entrypoint.sh"]
+CMD ["./bin/rails", "server", "--binding=0.0.0.0", "--port=80"]