commands

command docker run -d --rm -v ${PWD}/test.txt:/test.txt busybox cat /test.txt description Run a temporary container that prints the contents of test.txt and exits. purpose This command is used to quickly read the contents of a local file (`test.txt`) from inside a Docker container. It's useful for testing volume mounts, validating file access inside containers, or using containerized tools on host files without installing anything.

parts

flag docker run -d --rm -v ${PWD}/test.txt:/test.txt busybox cat /test.txt meaning Start a new container from a specified image Detached mode — run the container in the background Automatically remove the container after it exits Mount the local file 'test.txt' from the current directory into the container at path '/test.txt' Use the 'busybox' container image (a minimal Linux environment) Run the 'cat' command inside the container to print the contents of '/test.txt'