chore: better init and test capabilities

Dockerfile

@@ -18,8 +18,15 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
     libyaml-dev \
     libpq-dev \
     socat \
+    chromium \
+    chromium-driver \
     && rm -rf /var/lib/apt/lists/*
 
+# Selenium/Capybara discover Chrome via these env vars.
+# chromium-driver installs chromedriver at /usr/bin/chromedriver.
+ENV CHROME_BIN=/usr/bin/chromium
+ENV CHROMEDRIVER=/usr/bin/chromedriver
+
 # --- rbenv (installed into home volume on first run, via entrypoint) ---
 # RBENV_ROOT points into the home volume so the install persists across rebuilds.
 ENV RBENV_ROOT=/home/coder/.rbenv

entrypoint.sh

@@ -19,14 +19,37 @@ if [ ! -d "$RBENV_ROOT/bin" ]; then
 fi
 eval "$(rbenv init - bash)"
 
-# Install nvm if not already present in the home volume.
-if [ ! -s "$NVM_DIR/nvm.sh" ]; then
-  echo "nvm not found — running installer..."
-  curl -fsSL https://raw.githubusercontent.com/nvm-sh/nvm/HEAD/install.sh |
-    NVM_DIR="$NVM_DIR" PROFILE=/dev/null bash
-  echo "nvm installed successfully."
+# Determine the desired Ruby version: prefer .ruby-version in the workspace,
+# fall back to the rbenv global setting, then a hardcoded default.
+if [ -f "/code/.ruby-version" ]; then
+  RUBY_VERSION=$(tr -d '[:space:]' </code/.ruby-version)
+elif [ -f "$RBENV_ROOT/version" ]; then
+  RUBY_VERSION=$(cat "$RBENV_ROOT/version")
+else
+  RUBY_VERSION="3.3.6"
+fi
+
+# Install the Ruby version if it isn't already built.
+if ! rbenv versions --bare 2>/dev/null | grep -qx "$RUBY_VERSION"; then
+  echo "Ruby $RUBY_VERSION not found — installing (this may take a few minutes)..."
+  rbenv install "$RUBY_VERSION"
+  echo "Ruby $RUBY_VERSION installed."
+fi
+rbenv global "$RUBY_VERSION"
+
+# Ensure bundler is available for this Ruby version.
+if ! gem list bundler -i &>/dev/null; then
+  gem install bundler --no-document
+fi
+
+# Install gem dependencies for the linked workspace so rspec (and other gems)
+# are available without needing an explicit `bundle install` step.
+if [ -f "/code/Gemfile" ]; then
+  echo "Gemfile found — running bundle install..."
+  pushd /code
+  BUNDLE_GEMS__GRAPHQL__PRO="gql_2e0_d66f5103067:70c113ba329" bundle install
+  popd
 fi
-. "$NVM_DIR/nvm.sh"
 
 # Install Claude Code if not already present in the home volume.
 # Because the home directory is a volume, this install persists across