Add bundler helpers docker build

.gitignore

@@ -15,10 +15,11 @@ vendor
 /.vscode-server/
 /.vscode-server-insiders/
 .byebug_history
-/terraform/helpers/install-dir
-/go_modules/helpers/install-dir
+/bundler/helpers/install-dir
 /npm_and_yarn/helpers/node_modules
 /npm_and_yarn/helpers/install-dir
+/go_modules/helpers/install-dir
+/terraform/helpers/install-dir
 /dry-run
 **/bin/helper
 /.core-bash_history

Dockerfile

@@ -170,6 +170,7 @@ RUN export CARGO_HOME=/opt/rust ; curl https://sh.rustup.rs -sSf | sh -s -- -y
 
 COPY composer/helpers /opt/composer/helpers
 COPY dep/helpers /opt/dep/helpers
+COPY bundler/helpers /opt/bundler/helpers
 COPY go_modules/helpers /opt/go_modules/helpers
 COPY hex/helpers /opt/hex/helpers
 COPY npm_and_yarn/helpers /opt/npm_and_yarn/helpers
@@ -183,6 +184,7 @@ ENV DEPENDABOT_NATIVE_HELPERS_PATH="/opt" \
 RUN bash /opt/terraform/helpers/build /opt/terraform && \
   bash /opt/python/helpers/build /opt/python && \
   bash /opt/dep/helpers/build /opt/dep && \
+  bash /opt/bundler/helpers/build /opt/bundler && \
   bash /opt/go_modules/helpers/build /opt/go_modules && \
   bash /opt/npm_and_yarn/helpers/build /opt/npm_and_yarn && \
   bash /opt/hex/helpers/build /opt/hex && \

bundler/helpers/build

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+set -e
+
+install_dir=$1
+if [ -z "$install_dir" ]; then
+  echo "usage: $0 INSTALL_DIR"
+  exit 1
+fi
+
+helpers_dir="$(dirname "${BASH_SOURCE[0]}")"
+cp -r \
+  "$helpers_dir/lib" \
+  "$helpers_dir/run.rb" \
+  "$install_dir"
+
+cd "$install_dir"

bundler/lib/dependabot/bundler/native_helpers.rb

@@ -8,10 +8,8 @@ def self.helper_path
       end
 
       def self.native_helpers_root
-        # TODO: Remove?
-        #
-        # helpers_root = ENV["DEPENDABOT_NATIVE_HELPERS_PATH"]
-        # return File.join(helpers_root, "npm_and_yarn") unless helpers_root.nil?
+        helpers_root = ENV["DEPENDABOT_NATIVE_HELPERS_PATH"]
+        return File.join(helpers_root, "bundler") unless helpers_root.nil?
 
         File.join(__dir__, "../../../helpers")
       end