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 can build docker image from a file called docker file and named Dockerfile by default. It has set of command/instruction that you need in your docker container. Below command creates image with tag latest, Dockerfile should present on that location (. means present direcotry)

docker build . -t <image_name>:latest

You can specify the Dockerfile via -f if the file name in not default (Dockerfile) Sameple Docker file contents.

FROM busybox
RUN echo "hello world"

Answer 2

The following command worked for me. Docker file was placed in my-app-master folder.

docker build -f my-app-master/Dockerfile -t my-app-master .