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ryan0x44/get-docker-image-cmd.sh

Created March 20, 2018 20:19
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Get Docker Image CMD
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get-docker-image-cmd.sh
#!/bin/bash -e
# Using the "hello-world" image as an example
# https://github.com/docker-library/hello-world/blob/c83a065a24e94e635ddd518c2a3cffc91accf30d/amd64/hello-world/Dockerfile#L3
# `CMD ["/hello"]`
docker pull hello-world
docker inspect -f "{{.Config.Cmd}}" hello-world | cut -f2 -d "[" | cut -f1 -d "]"
# produces: `/hello`
# Note: you might also expect to see `/bin/sh -c exec` as a prefix
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