If we don't know where our scripts are, we have much deeper issues, but still not insurmountable. $ sed -i 's/fgrep/grep\ -F/' $(grep -rw '/' -e 'fgrep')

If we don't know where our scripts are, we have much deeper issues, but still not insurmountable. $ sed -i 's/fgrep/grep\ -F/' $(grep -rw '/' -e 'fgrep') (or something) I don't manage docker images, but surely there must be a way to do something as simple as replace a file in one image,[1] and if that can be done, doing so in all images is just one clever step away. [1] https://stackoverflow.com/questions/40895859/how-can-i-overwrite-a-file-through-dockerfile-in-docker-container https://stackoverflow.com/questions/40895859/how-can-i-overw...