Infrastructure
How to Check the Base Image of a Docker Container
→ 日本語版を読むI was wondering what OS a container was using, so I casually entered the Docker container and ran uname -r.
The host OS was displayed, which made me think "huh?" — but it made sense once I remembered it's a container.
For Debian-based systems, you can check the base image by looking at /etc/os-release.
For RedHat-based systems, check /etc/[redhat](<https://d.hatena.ne.jp/keyword/redhat>)-release.