adding semaphore ensure files

.semaphore/ensure-bundle.sh

@@ -0,0 +1,18 @@
+# Ensure that the bundle is installed and cached
+#
+
+bundle config set --local deployment true
+bundle config set --local path vendor/bundle
+gem update --no-doc bundler
+
+gemfile_checksum=$(checksum Gemfile.lock)
+cache_key="${SEMAPHORE_AGENT_MACHINE_OS_IMAGE}-${RUBY_VERSION}-${gemfile_checksum}"
+
+if cache has_key "${cache_key}"; then
+  echo "Bundle for ${RUBY_VERSION} and Gemfile.lock found in cache"
+  cache restore "${cache_key}"
+else
+  echo "Caching Bundle for ${RUBY_VERSION} and Gemfile.lock"
+  bundle install
+  cache store "${cache_key}" vendor/bundle
+fi

.semaphore/ensure-ruby-version.sh

@@ -0,0 +1,14 @@
+# Ensure the correct Ruby version is installed and cached
+#
+cache_key="${SEMAPHORE_AGENT_MACHINE_OS_IMAGE}-${RUBY_VERSION}"
+
+if cache has_key "${cache_key}"; then
+  echo "Ruby ${RUBY_VERSION} found in cache"
+  cache restore "${cache_key}"
+  sem-version ruby "${RUBY_VERSION}" -f
+else
+  echo "Installing Ruby $RUBY_VERSION"
+  sem-version ruby "${RUBY_VERSION}" -f
+  cache store "${cache_key}" "${HOME}/.rbenv/versions/${RUBY_VERSION}"
+fi
+