Docker stopping after first line - docker

Question

I have a Dockerfile:
FROM jpetazzo/dind
ENV debian_frontend noninteractive
RUN apt-get -y update
RUN apt-get install -y supervisor
COPY supervisor.conf /etc/supervisor.conf
COPY wrapdocker.conf /etc/supervisor/conf.d/wrapdocker.conf
CMD supervisord -c /etc/supervisor.conf
Running it gives me an EOF:
$docker build .
Sending build context to Docker daemon 2.048 kB
Sending build context to Docker daemon
Step 0 : FROM jpetazzo/dind
EOF
I am on Ubuntu 14.04:
$docker version
Client version: 1.7.1
Client API version: 1.19
Go version (client): go1.4.2
Git commit (client): 786b29d
OS/Arch (client): linux/amd64
Server version: 1.7.1
Server API version: 1.19
Go version (server): go1.4.2
Git commit (server): 786b29d
OS/Arch (server): linux/amd64
Any clue why is there an EOF?
I tried to re-copy the file in another directory, it didn't change anything. Changing FROM jpetazzo/dind to FROM ubuntu does change things.
EDIT:
The logs created during the mistake:
/var/log/upstart$ sudo cat docker.log
INFO[0568] POST /v1.19/build?cgroupparent=&cpuperiod=0&cpuquota=0&cpusetcpus=&cpusetmems=&cpushares=0&dockerfile=Dockerfile&memory=0&memswap=0&rm=1&t=

Answer 1

I tried to re-produce that error by using your Dockerfile without success:
$ docker build .
Sending build context to Docker daemon 4.608 kB
Sending build context to Docker daemon
Step 0 : FROM jpetazzo/dind
---> e82a08f5b4e3
Step 1 : ENV debian_frontend noninteractive
---> Running in bb205a0e8238
---> e1e5993a94b7
Removing intermediate container bb205a0e8238
Step 2 : RUN apt-get -y update
---> Running in 1004dda4c147
Get:1 https://get.docker.com docker InRelease
Ign https://get.docker.com docker InRelease
Hit https://get.docker.com docker Release.gpg
Hit https://get.docker.com docker Release
...
Are you sure that you do not have networking issues on the host where your Docker daemon runs?
I am using the same Docker server/client version like you.