What is difference between entry point and cmd in dockerfile

Question

Accepted Answer

The ENTRYPOINT instruction specifies the command that will be executed when a container is run. The CMD instruction provides default arguments for the ENTRYPOINT command.

ENTRYPOINT is used to specify the executable that will run as the main process inside the container.
CMD is used to provide default arguments for the ENTRYPOINT command.
ENTRYPOINT and CMD can be used together to create a flexible Docker image.
ENTRYPOINT is preferred when you want to define a container with a specific executable.
CMD is preferred when you want to provide default arguments to the ENTRYPOINT command.

Accepted Answer

"CMD": This instruction specifies the default command that will be executed when the container is started. It can be overridden by passing a command to the "docker run" command. The "CMD" instruction can be specified only once in a Dockerfile, and if it is specified multiple times, only the last one will take effect.

"ENTRYPOINT": This instruction specifies the command that will be run when the container is started, just like "CMD". However, unlike "CMD", the "ENTRYPOINT" instruction cannot be overridden by passing a command to "docker run". Instead, any arguments passed to "docker run" will be appended to the command specified in the "ENTRYPOINT" instruction.

What is difference between entry point and cmd in dockerfile

Popular interview questions of DevOps Specialist

Top HR questions asked in OpsTree Solutions DevOps Specialist