Fast starting MySQL Docker image suitable for test fixtures

  ⌁21% [:~/Work/docker-mysql] master(+1/-1) ± time make stop run
  docker-mysql
  docker run --name docker-mysql -d -p 3306:3306 zanox/mysql
  9811d9c80d43770c6a5844a772cb4327e67e918ab2a2699e8905e157b03819e0
  
  real    0m0.603s
  user    0m0.017s
  sys 0m0.018s