path needs to be specified to 'docker build' command

current folder '.' appended as a path
port published explicitly (for docker 0.6.6)

port 5984 to couchdb needs to be published explicitly in docker version 0.6.6
Merge pull request #2713 from eugenkrizo/patch-2

port published explicitly (for docker 0.6.6)
Merge pull request #2709 from eugenkrizo/patch-1

path needs to be specified to 'docker build' command