


n requests Number of requests to perform Now if you run the container from the above Dockerfile images, it will throw the following error. Let’s take an example of the following Dockerfile. It installs http-tools and starts the ab ( apache benchmark) utility using CMD and Entrypoint. Executing Commands Using ENTRYPOINT and CMD Lets understand these concepts practically. The resulting command will be executed when the container is started. If both ENTRYPOINT and CMD are specified in a Dockerfile, the command specified in CMD will be appended to the ENTRYPOINT command. The default ENTRYPOINT command is /bin/sh -cĬMD, on the other hand, is used to specify the default command and arguments that should be executed when a container is started. In a Dockerfile, ENTRYPOINT and CMD are two different instructions that are used to define how a container should run.ĮNTRYPOINT is used to specify the main command that should be executed when a container is started using the image. In this blog we will look at the key differences between Docker ENTRYPOINT vs CMD instruction using a practical example.
