![]() One difference is that unlike CMD, you cannot override the ENTRYPOINT command just by adding new command line parameters. You can use one or combine both depending on how you want to run your container. When I try I get the following message: docker: Error response from daemon: create backup-volume/label-for-backup: "backup-volume/label-for-backup" includes invalid characters for a local volume name, only "" are allowed. Entrypoint and CMD are instructions in the Dockerfile that define the process in a Docker image. But apparently docker does not allow the mapping of subdirectories within volumes. If I could run the container like this: docker run -rm -it -v data-volume:/target -v backup-volume/label-for-backup:/backup duplicity-backup-image docker-entrypoint.sh mysqld Up 3306/tcp 1basicswordpress1. In this tutorial, you’ll learn how to use the ENTRYPOINT and CMD instructions to run startup commands in a Dockerfile and understand the differences between them. ![]() So my question is how to I pass $backup-label to the run command and how do I create the Entrypoint so that it makes sure that the correct directory structure exists prior to running duplicity as indicated above? Executing Docker Compose will automatically create a Docker network and run the containers. Using the Dockerfile ENTRYPOINT and CMD instructions, you can run as many startup commands as you’d like. So I have created a docker image containing duplicity so I can run the above command with mapping the volume to be backed up to /target and the volume that stores the backup to /backup. So I need to run a command like this within the container performing the backup: mkdir -p /backup/$backup-labelĭuplicity /target file:///backup/$backup-label 0stone0 yes, entrypoint.sh is in the same folder that has Dockerfile DavidMaze 0stone0 kindly check EDIT above, working directory is /tmp I dont need separate containers, its only one container. CMD is appended to the ENTRYPOINT. ![]() I need to backup a docker volume to a specific directory within another docker volume using Duplicity. ![]()
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