Missing Dockerfile

[GenMalfunction]

docker-compose fails with "Missing Dockerfile" as shown below:

$ sudo docker-compose run --service-ports --rm readthedocs
Pulling db (sameersbn/postgresql:9.1-1)...
9.1-1: Pulling from sameersbn/postgresql
a3ed95caeb02: Pull complete
3fb9964802bf: Pull complete
4b70f00f1250: Pull complete
6d1b40e89a6f: Pull complete
e1137a2d4301: Pull complete
adf75a814e6b: Pull complete
fd0107fe8768: Pull complete
d72613fec2ef: Pull complete
b7b8cdd7520a: Pull complete
Digest: sha256:23d07bafe1661c8b581ecc4ec00f48bd684d118ab9eadbccb198cb7380eaf964
Status: Downloaded newer image for sameersbn/postgresql:9.1-1
Pulling elasticsearch (jfroche/elasticsearch:)...
latest: Pulling from jfroche/elasticsearch
a3ed95caeb02: Pull complete
8cec72ef32a5: Pull complete
b5d0abe18dec: Pull complete
c2efe7d13661: Pull complete
83abbc5bee98: Pull complete
6e08bdf2c205: Pull complete
5208f9387fac: Pull complete
7a62a599a192: Pull complete
3fb6f43f8aa1: Pull complete
f3275e1efee5: Pull complete
53c19081779d: Pull complete
c6aa7df0be3b: Pull complete
aac098799706: Pull complete
Digest: sha256:dfde4a4e890746e0e8183c286a2104142e1ece6f919fd93b06127b0b7e80289e
Status: Downloaded newer image for jfroche/elasticsearch:latest
Pulling redis (redis:)...
latest: Pulling from library/redis
1ab2bdfe9778: Pull complete
966bc436cc8b: Pull complete
c1b01f4f76d9: Pull complete
8a9a85c968a2: Pull complete
8e4f9890211f: Pull complete
93e8c2071125: Pull complete
Digest: sha256:9755880356c4ced4ff7745bafe620f0b63dd17747caedba72504ef7bac882089
Status: Downloaded newer image for redis:latest
Creating readthedocs_redis_1 ... done
Creating readthedocs_elasticsearch_1 ... done
Creating readthedocs_db_1 ... done
Building readthedocs
ERROR: Cannot locate specified Dockerfile: Dockerfile