Overriding container entrypoint at runtime

dzhigalin

In Building Container Images there is a statement

But the executable/command provided during the build time cannot be overridden at runtime.

As far as I know we can use --entrypoint option to do exactly this at runtime - override the entrypoint that was given during build. Is it a mistake?

chrispokorni

Hi @dzhigalin,

As opposed to RUN which is a buildtime instruction, both CMD and ENTRYPOINT are runtime instructions that provide or modify runtime commands and arguments, achieved as you mentioned above with the --entrypoint flag.

Regards,
-Chris