docker build
docker build -t [tag] .
dockerfile example
FROM ubuntu:18.04
COPY . /app
RUN make /app
CMD python /app/app.py
how to create docker image from custom filename
cat DockerFile.debian.foo | docker build -t debian.foo -
docker build from dockerfile
$ docker build - < Dockerfile
docker build supress build output
docker image build -t [name] . -q
dockerfile run app cmd
RUN apt-get install python3
CMD echo "Hello world"
ENTRYPOINT echo "Hello world"