I have been fiddling with trying to build a Dockerfile and container for the following.
A Alpine Linix image with LFTP, cron, & openssh installed for use with my external server to sync folders.
I have a Alpine Linix VM that I connect with a external server using SSH keys, and a cron task running a LFTP script on schedule.
Any help or pointing me at a container you know of is appreciated.
You could create one. Learning how to put together your own Docker images is a rush.
why
You can create initful container (don’t know if it possible with alpine) and run as many services inside it as you desire. Crons are pretty clunky inside containers and it’s a lot easier to just run them from host using docker/podman container exec, writing containerfiles is pretty easy as well.
I get LFTP and somewhat cron, but why OpenSSH? You can also SSH to the host and get into the container from there.
ITry to keep containers minimal, meaning only add what you absolutely need. Also I advise you to keep/consider the content of the container as immutable. If something’s wrong, throw it away and restart with aa clean container. Data that you download should reside on a volume mapped to the container and this can usually also be accessed from the host. Same for any LFTP/cron config, etc.
So, what exactly is you plan why you need to SSH into the container itself? This post smells a bit like a XY Problem.
A quick google reveals that there are ready to go docker images with LFTP (which weighs about 7.5MB), which might be completely suitable for your need depending on your use case? https://hub.docker.com/r/minidocks/lftp/
I’d never heard of the XY Problem before.
I get it - big opportunity to waste lots of time.
However, while I’ve never posted a question on stack overflow or similar, a common complaint is that it’s a toxic community because of responses related to this problem - a user asks about X and is accused of asking about Y and most responses undermine the premise being question Z.
