upgrade to rails 8; all tests pass

.devcontainer/Dockerfile

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+# syntax=docker/dockerfile:1
+# check=error=true
+
+# Make sure RUBY_VERSION matches the Ruby version in .ruby-version
+ARG RUBY_VERSION=3.3.8
+FROM ruby:$RUBY_VERSION-slim AS base
+
+# Rails app lives here
+WORKDIR /rails
+
+# Update gems and bundler
+RUN gem update --system --no-document && \
+    gem install -N bundler
+
+# Install base packages
+RUN apt-get update -qq && \
+    apt-get install --no-install-recommends -y \
+      curl \
+      git \
+      openssh-client \ 
+      libjemalloc2 \
+      sqlite3 \
+      libsqlite3-dev && \
+    rm -rf /var/lib/apt/lists /var/cache/apt/archives
+
+# Set production environment
+ENV BUNDLE_DEPLOYMENT="1" \
+    BUNDLE_PATH="/usr/local/bundle" \
+    BUNDLE_WITHOUT="production" \
+    RAILS_ENV="development"
+
+
+# Throw-away build stage to reduce size of final image
+FROM base AS build
+
+# Install packages needed to build gems
+RUN apt-get update -qq && \
+    apt-get install --no-install-recommends -y build-essential libffi-dev libyaml-dev libsqlite3-dev && \
+    rm -rf /var/lib/apt/lists /var/cache/apt/archives
+
+# Install application gems
+COPY Gemfile Gemfile.lock ./
+RUN bundle install && \
+    rm -rf ~/.bundle/ "${BUNDLE_PATH}"/ruby/*/cache "${BUNDLE_PATH}"/ruby/*/bundler/gems/*/.git && \
+    bundle exec bootsnap precompile --gemfile
+
+# Copy application code
+COPY . .
+
+# Precompile bootsnap code for faster boot times
+RUN bundle exec bootsnap precompile app/ lib/
+
+# Precompiling assets
+RUN ./bin/rails assets:precompile
+
+
+# Final stage for app image
+FROM base AS development
+
+# Copy built artifacts: gems, application
+COPY --from=build "${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
+USER 1000:1000
+
+# Entrypoint prepares the database.
+ENTRYPOINT ["/rails/bin/docker-entrypoint"]
+
+# Start the server by default, this can be overwritten at runtime
+EXPOSE 8080
+CMD ["./bin/rails", "server", "-p", "8080"]

.devcontainer/devcontainer.json

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+{
+  "name": "Draft Dev Container",
+  "build": {
+    "dockerfile": "./Dockerfile",
+    "context": ".."
+  },
+  "forwardPorts": [8080],
+  "postCreateCommand": "bin/setup --skip-server && mkdir -p ~/.ssh && ssh-keyscan github.com >> ~/.ssh/known_hosts",
+  "settings": {
+    "git.path": "/opt/homebrew/bin/git",
+    "terminal.integrated.shell.linux": "/bin/zsh",
+    "terminal.integrated.defaultProfile.linux": "zsh",
+    "ghcr.io/devcontainers/features/github-cli:1": {},
+    "ghcr.io/devcontainers/features/git:1": {}
+  },
+  "extensions": [
+    "rebornix.Ruby",
+    "castwide.solargraph"
+  ],
+  "runArgs": ["--name", "draft-dev-container"]
+}

.dockerignore

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+# See https://docs.docker.com/engine/reference/builder/#dockerignore-file for more about ignoring files.
+
+# Ignore git directory.
+/.git/
+/.gitignore
+
+# Ignore bundler config.
+/.bundle
+
+# Ignore all environment files.
+/.env*
+
+# Ignore all default key files.
+/config/master.key
+/config/credentials/*.key
+
+# Ignore all logfiles and tempfiles.
+/log/*
+/tmp/*
+!/log/.keep
+!/tmp/.keep
+
+# Ignore pidfiles, but keep the directory.
+/tmp/pids/*
+!/tmp/pids/.keep
+
+# Ignore storage (uploaded files in development and any SQLite databases).
+/storage/*
+!/storage/.keep
+/tmp/storage/*
+!/tmp/storage/.keep
+
+# Ignore assets.
+/node_modules/
+/app/assets/builds/*
+!/app/assets/builds/.keep
+/public/assets
+
+# Ignore CI service files.
+/.github
+
+# Ignore Kamal files.
+/config/deploy*.yml
+/.kamal
+
+# Ignore development files
+/.devcontainer
+
+# Ignore Docker-related files
+/.dockerignore
+/Dockerfile*

.rubocop.yml

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+inherit_from: .rubocop_todo.yml
+
+plugins:
+  - rubocop-rails
+
+inherit_mode:
+  merge:
+    - Exclude
+
+AllCops:
+  NewCops: enable
+  TargetRubyVersion: 3.3
+  TargetRailsVersion: 8.0
+  SuggestExtensions: false
+
+Style/Documentation:
+  Enabled: false