Merge pull request #33 from dev-sec/ap/assignment_regex

Due to inspec deprecation warnings

Author: chris-rock

libraries/docker_helper.rb

@@ -53,7 +53,7 @@ def socket
   def parse_systemd_values(stdout)
     SimpleConfig.new(
       stdout,
-      assignment_re: /^\s*([^=]*?)\s*=\s*(.*?)\s*$/,
+      assignment_regex: /^\s*([^=]*?)\s*=\s*(.*?)\s*$/,
       multiple_values: false
     ).params
   end