Dockerfile build code example

Example 1: docker build

docker build -t [tag] .

Example 2: docker build from dockerfile

$ docker build - < Dockerfile

Example 3: dockerfile example

FROM ubuntu:18.04
COPY . /app
RUN make /app
CMD python /app/app.py

Example 4: docker build supress build output

docker image build -t [name] . -q

Example 5: how to create docker image from custom filename

cat DockerFile.debian.foo | docker build -t debian.foo -

Example 6: dockerfile run app cmd

RUN apt-get install python3
CMD echo "Hello world"
ENTRYPOINT echo "Hello world"