dc-update

An opinioned script for updating large docker-compose based systems

Why?

Docker and docker-compose are great. Though, my home server currently has 40 running containers, which is kind of a nightmare to keep on top of. This program is the next step in the evolution of a gross Bash script that I used to keep it all up to date.

Install

npm install -g dc-update

Usage

To update all running containers in the docker-compose file in the current directory:

dc-update

Only want to update a few containers?

dc-update container1 container2 container3

Is the docker-compose file in another location?

dc-update -f /path/to/docker-compose.yml

Of course, --help will give you the current list of options.

dc-update --help

Building Containers

In my particular setup, I have a few containers that have to be pulled and built before they can be updated. Of course, we only want to restart a container if there is actually a reason to do so. The --build option will pull and build the container first, and then try to update it along with the rest if it was updated and not just pulled from the cache.

dc-update --build app --build proxy

Note: The build list and update list are completely separate. If you want to build AND update only a few containers, they must be specified twice. (I may fix this later).

dc-update --build app --build proxy app proxy