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I see there are three docker commands that seem to do very similar things:
docker builddocker createdocker run What are the differences between these commands?
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docker create command creates a writeable container from the image and prepares it for running. docker run command creates the container (same as docker create ) and starts it.
RUN is an image build step, the state of the container after a RUN command will be committed to the container image. A Dockerfile can have many RUN steps that layer on top of one another to build the image. CMD is the command the container executes by default when you launch the built image.
The docker build command builds Docker images from a Dockerfile and a “context”. A build's context is the set of files located in the specified PATH or URL . The build process can refer to any of the files in the context. For example, your build can use a COPY instruction to reference a file in the context.
The run command acts like docker run -ti in that it opens an interactive terminal to the container and returns an exit status matching the exit status of the process in the container. The docker compose start command is useful only to restart containers that were previously created, but were stopped.
docker build builds a new image from the source code.docker create creates a writeable container from the image and prepares it for running.docker run creates the container (same as docker create) and runs it.
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