dxloader:
Hi, I have a question about using command:
command: [“sh”, “-c”, “sleep 600”]
vs
command: [“sleep”, “600”]
what is the difference? which one is better ?
R Banerjee:
sleep 600 wont work if the image you are working upon doesnt load up with bash/sh
For example, if you have Prometheus Image, then prometheus CLI would be loaded as the entry point. If you need to login to the container’s shell, you need exec -it $POD_NAME -- sh , to load the shell. Similarly, here sh -c is a way to tell the container to load the shell and then execute 600s sleep.
Logically , no container ideally should give a default shell , because then anyone can login and it can be a security issue( imagine logging and doing an rm -rf 
)
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R Banerjee:
Point is, it depends what the entry command is. Logically, the first one is better since it takes care if the entry command is sh or non-sh
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thanks for the detailed explanation !