diff --git a/spec/helper/get_docker_service_flags.rb b/spec/helper/get_docker_service_flags.rb
index 07b493c..c33daec 100644
--- a/spec/helper/get_docker_service_flags.rb
+++ b/spec/helper/get_docker_service_flags.rb
@@ -1,93 +1,93 @@
 # frozen_string_literal: true
 
 require 'shellwords'
 
 def get_docker_service_flags(args)
   flags = []
 
   if args['service_name'] && args['service_name'].to_s != 'undef'
     flags << "'#{args['service_name']}'"
   end
 
   if args['detach'].to_s != 'false'
     flags << '--detach'
   end
 
   if args['env'].is_a? Array
     args['env'].each do |env|
-      flags << "--env #{env}"
+      flags << "--env '#{env}'"
     end
   end
 
   if args['label'].is_a? Array
     args['label'].each do |label|
       flags << "--label #{label}"
     end
   end
 
   if args['mounts'].is_a? Array
     args['mounts'].each do |mount|
       flags << "--mount #{mount}"
     end
   end
 
   if args['networks'].is_a? Array
     args['networks'].each do |network|
       flags << "--network #{network}"
     end
   end
 
   if args['publish'].is_a? Array
     args['publish'].each do |port|
       flags << "--publish #{port}"
     end
   elsif args['publish'] && args['publish'].to_s != 'undef'
     flags << "--publish '#{args['publish']}'"
   end
 
   if args['replicas'] && args['replicas'].to_s != 'undef'
     flags << "--replicas '#{args['replicas']}'"
   end
 
   if args['tty'].to_s != 'false'
     flags << '--tty'
   end
 
   if args['user'] && args['user'].to_s != 'undef'
     flags << "--user '#{args['user']}'"
   end
 
   if args['workdir'] && args['workdir'].to_s != 'undef'
     flags << "--workdir '#{args['workdir']}'"
   end
 
   if args['extra_params'].is_a? Array
     args['extra_params'].each do |param|
       flags << param
     end
   end
 
   if args['host_socket'] && args['host_socket'].to_s != 'undef'
     flags << "-H '#{args['host_socket']}'"
   end
 
   if args['registry_mirror'].is_a? Array
     args['registry_mirror'].each do |param|
       flags << "--registry-mirror='#{param}'"
     end
   elsif args['registry_mirror'] && args['registry_mirror'].to_s != 'undef'
     flags << "--registry-mirror='#{args['registry_mirror']}'"
   end
 
   if args['image'] && args['image'].to_s != 'undef'
     flags << "'#{args['image']}'"
   end
 
   if args['command'].is_a? Array
     flags << args['command'].join(' ')
   elsif args['command'] && args['command'].to_s != 'undef'
     flags << args['command'].to_s
   end
 
   flags.flatten.join(' ')
 end