816f39672a
It is a tar stream, you should mention that somehow.
Here is the proof:
```
host:~$ docker run -t -i ubuntu:14.04 bash
root@c39be4c7b7c8:/# echo "my file contents" > abc
root@c39be4c7b7c8:/# cat abc
my file contents
root@c39be4c7b7c8:/# exit
host:~$ curl -H "Content-Type: application/json" -d '{"Resource":"/abc"}' http://localhost:4500/containers/c39be4c7b7c8/copy
abc0100644000000000000000000000002112402102531007674 0ustar0000000000000000my file contents
host:~$ curl -H "Content-Type: application/json" -d '{"Resource":"/abc"}' http://localhost:4500/containers/c39be4c7b7c8/copy > response_content
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 2067 100 2048 100 19 56968 528 --:--:-- --:--:-- --:--:-- 58514
host:~$ tar xvf response_content
abc
host:~$ cat abc
my file contents
```
Docker-DCO-1.1-Signed-off-by: Mustafa Akın <mustafa91@gmail.com> (github: SvenDowideit)
Upstream-commit: b9e889c30988f3babbc059a883d7f3096611ad60
Component: engine