Currently I’m planning to dockerize some web applications but I didn’t find a reasonably easy way do create the images to be hosted in my repository so I can pull them on my server.
What I currently have is:
- A local computer with a directory where the application that I want to dockerize is located
- A “docker server” running Portainer without shell/ssh access
- A place where I can upload/host the Docker images and where I can pull the images from on the “Docker server”
- Basic knowledge on how to write the needed
Dockerfile
What I now need is a sane way to build the images WITHOUT setting up a fully featured Docker environment on the local computer.
Ideally something where I can build the images and upload them but without that something “littering Docker-related files all over my system”.
Something like a VM that resets on every start maybe? So … build the image, upload to repository, close the terminal window, and forget that anything ever happened.
What is YOUR solution to create and upload Docker images in a clean and sane way?
For the littering part, just type
crontab -eand add the following line:@daily docker system prune -a -fas a user with root permission or as root ?
You shouldn’t need sudo to run docker, just can create a
dockergroup and add your user to it. This will give you the steps on how to run docker withoutsudo.Edit: as pointed out below, please make sure that you’re comfortable with giving these permissions to the user you’re adding to the docker group.
Genuinely curious, what would the advantages be?
Also, what if the Linux distro does not have systemd?
I was just making a meme dude. Personally, I like systemd, it’s more complicated to learn, I ended up reading books to really learn it properly. There’s 100% nothing wrong with cron.
One of the reasons I like timers is journalctl integration. I can see everything in one place. Small thing.
The chances I am going to manage a linux distro without systemd are low, but some systems (arch for example) don’t have cron out of the box.
Not that big of a deal since it’s easy to translate them all, but that’s one of the reasons why I default to systemd/timer units.