docker: “build” requires 1 argument. See 'docker build --help'

Question

Trying to follow the instructions for building a docker image from the docker website.

https://docs.docker.com/examples/running_redis_service/

this is the er

Answer 1

You need to add a dot, which means to use the Dockerfile in the local directory.

For example:

docker build -t mytag .

It means you use the Dockerfile in the local directory, and if you use docker 1.5 you can specify a Dockerfile elsewhere. Extract from the help output from docker build:

-f, --file="" Name of the Dockerfile(Default is 'Dockerfile' at context root)