pin docker version for local build target
pin docker version for local build target

gliderlabs/herokuish,gliderlabs/herokuish,expa/herokuish,gliderlabs/herokuish,gliderlabs/herokuish,gliderlabs/herokuish,expa/herokuish,expa/herokuish,expa/herokuish,expa/herokuish,gliderlabs/herokuish,gliderlabs/herokuish,expa/herokuish,expa/herokuish,expa/herokuish,gliderlabs/herokuish