What commands are used in a Dockerfile?

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Accepted Answer

Commands used in Dockerfile are instructions that define how an image should be built.

FROM: specifies the base image
RUN: executes commands in a new layer on top of the current image
COPY: copies files from the host machine to the image
CMD: specifies the default command to run when a container is started
EXPOSE: exposes ports from the container to the host machine
WORKDIR: sets the working directory for any RUN, CMD, ENTRYPOINT, COPY, and ADD instructions
ENV: sets environment variables
ENTRYPOINT: configures a container that will run as an executable

Accepted Answer

Commands used in Dockerfile are instructions that define how an image should be built.
FROM: specifies the base image

RUN: executes commands in a new layer on top of the current image

COPY: copies files from the host machine to the image

CMD: specifies the default command to run when a container is started

EXPOSE: exposes ports from the container to the host machine

WORKDIR: sets the working directory for any RUN, CMD, ENTRYPOINT, COPY, and ADD instructions

ENV: sets environment variables

ENTRYPOINT: configures a container that will run as an executable

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