title: docker minio fails at start with error : "disk path full"
body: <p>I have a docker base on minio, when it starts locally on my mac i got the following error:</p>
  
  <pre><code>Error: disk path full
    10: cmd/fs-v1-helpers.go:320:cmd.fsCreateFile()
     9: cmd/fs-v1.go:905:cmd.(*FSObjects).putObject()
     8: cmd/fs-v1.go:819:cmd.(*FSObjects).PutObject()
     7: cmd/config-common.go:62:cmd.saveConfig()
     6: cmd/config.go:68:cmd.saveServerConfig()
     5: cmd/config-current.go:514:cmd.newSrvConfig()
     4: cmd/config-migrate.go:2474:cmd.migrateConfigToMinioSys()
     3: cmd/config.go:181:cmd.initConfig()
     2: cmd/config.go:144:cmd.(*ConfigSys).Init()
     1: cmd/server-main.go:342:cmd.serverMain()
  
  ERROR Unable to initialize config system: Storage reached its minimum free disk threshold.
  </code></pre>
  
  <p>print of my Disk</p>
  
  <pre><code>/dev/disk1     465Gi  331Gi  133Gi    72% 3236100 4291731179    0%   /
  devfs          187Ki  187Ki    0Bi   100%     648          0  100%   /dev
  map -hosts       0Bi    0Bi    0Bi   100%       0          0  100%   /net
  map auto_home    0Bi    0Bi    0Bi   100%       0          0  100%   /home
  </code></pre>
  
  <p>How can I fix it ? should I need to configure something in minio ? 
  thanks</p>