Dockerfile Instructions Explained In 7 Key Commands

FROM: Specifies the base image for subsequent instructions.
COPY: Copies files or directories from the host into the container.
RUN: Executes commands in the container during image build.
CMD: Defines the default command to run when the container starts.
EXPOSE: Exposes ports for networking between the container and host.
ENV: Sets environment variables in the container.
WORKDIR: Sets the working directory for subsequent instructions.
VOLUME: Creates a mount point and makes it accessible from the container.
ENTRYPOINT: Specifies the command to run when the container starts, overriding CMD.
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