docker ARG
$ docker build --build-arg some_variable_name=a_valuedocker ARG
$ docker build --build-arg some_variable_name=a_valuedockerfile example
FROM ubuntu:18.04
COPY . /app
RUN make /app
CMD python /app/app.pydockerfile env variabes
FROM busybox
ENV foo /bar
WORKDIR ${foo} # WORKDIR /bar
ADD . $foo # ADD . /bar
COPY \$foo /quux # COPY $foo /quuxdocker file
# getting base image from ubuntu
FROM ubuntu:18.04
RUN apt-get update
CMD ["echo", "HEY from docker image"]how to create docker image from custom filename
cat DockerFile.debian.foo | docker build -t debian.foo -Copyright © 2021 Codeinu
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